diff --git a/data/txt/sha256sums.txt b/data/txt/sha256sums.txt
index c803eafd40..c304d3e88f 100644
--- a/data/txt/sha256sums.txt
+++ b/data/txt/sha256sums.txt
@@ -181,14 +181,14 @@ a033f92d136c707a25927c2383125ddb004d4283db62c004dcd67c3fc242bb1c  lib/core/dump.
 1966ca704961fb987ab757f0a4afddbf841d1a880631b701487c75cef63d60c3  lib/core/__init__.py
 914a13ee21fd610a6153a37cbe50830fcbd1324c7ebc1e7fc206d5e598b0f7ad  lib/core/log.py
 67ea32c993cbf23cdbd5170360c020ca33363b7c516ff3f8da4124ef7cb0254d  lib/core/optiondict.py
-d75baf80690f08f80d605a42f675eaca9c26d7b1cbb47f5ddf7d36a47c4b640b  lib/core/option.py
-d9b37177efcaba035c7fabe7d015a3b63d9cfe502bb4998ff71e47f825eeaaca  lib/core/patch.py
+226c01e46050ff48122df682f713565509a386e58d06cc43da59d028e0afc2fd  lib/core/option.py
+789320dcb3f93137d3065080ee98429280bf10b20b66a1c08d3fcc1747b30d94  lib/core/patch.py
 49c0fa7e3814dfda610d665ee02b12df299b28bc0b6773815b4395514ddf8dec  lib/core/profiling.py
 03db48f02c3d07a047ddb8fe33a757b6238867352d8ddda2a83e4fec09a98d04  lib/core/readlineng.py
 48797d6c34dd9bb8a53f7f3794c85f4288d82a9a1d6be7fcf317d388cb20d4b3  lib/core/replication.py
 0b8c38a01bb01f843d94a6c5f2075ee47520d0c4aa799cecea9c3e2c5a4a23a6  lib/core/revision.py
 888daba83fd4a34e9503fe21f01fef4cc730e5cde871b1d40e15d4cbc847d56c  lib/core/session.py
-6b00dc765817f848de768ccb25831ec8a5d310c01adda6dcf1eaef36be742594  lib/core/settings.py
+76823a75705cc63d0dde9cd680913626536fbc6989b932fd191cd379ab2aaefb  lib/core/settings.py
 cd5a66deee8963ba8e7e9af3dd36eb5e8127d4d68698811c29e789655f507f82  lib/core/shell.py
 bcb5d8090d5e3e0ef2a586ba09ba80eef0c6d51feb0f611ed25299fbb254f725  lib/core/subprocessng.py
 70ea3768f1b3062b22d20644df41c86238157ec80dd43da40545c620714273c6  lib/core/target.py
diff --git a/lib/core/option.py b/lib/core/option.py
index fd3103fa0b..dfaf3653ea 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -2671,6 +2671,13 @@ def _basicOptionValidation():
         errMsg = "switch '--dump' is incompatible with switch '--search'"
         raise SqlmapSyntaxException(errMsg)
 
+    if conf.alert and os.environ.get("SQLMAP_UNSAFE_ALERT") != '1':
+        errMsg = "for security reasons, to prevent execution of potentially malicious "
+        errMsg += "OS commands via configuration files or copy-paste attacks, "
+        errMsg += "the '--alert' option requires the environment variable "
+        errMsg += "'SQLMAP_UNSAFE_ALERT=1' to be explicitly set"
+        raise SqlmapSystemException(errMsg)
+
     if conf.chunked and not any((conf.data, conf.requestFile, conf.forms)):
         errMsg = "switch '--chunked' requires usage of (POST) options/switches '--data', '-r' or '--forms'"
         raise SqlmapSyntaxException(errMsg)
diff --git a/lib/core/patch.py b/lib/core/patch.py
index 27d790a6fd..55ac8d3f1d 100644
--- a/lib/core/patch.py
+++ b/lib/core/patch.py
@@ -178,6 +178,41 @@ def reject(*args): raise ValueError("XML entities are forbidden")
         et.parse = _safe_parse
         et._patched = True
 
+    import io
+    import pickle
+    if not getattr(pickle, "_patched", False):
+        class RestrictedUnpickler(pickle.Unpickler):
+            def find_class(self, module, name):
+                # blacklist for OS-level execution modules
+                if module in ("os", "subprocess", "sys", "posix", "nt", "pty", "commands", "shutil"):
+                    raise ValueError("Unpickling of module '%s' is forbidden" % module)
+
+                # Python 2/3 method resolution
+                if hasattr(pickle.Unpickler, "find_class"):
+                    return pickle.Unpickler.find_class(self, module, name)
+
+                __import__(module)
+                return getattr(sys.modules[module], name)
+
+        def _safe_loads(data):
+            try:
+                stream = io.BytesIO(data)
+            except TypeError:
+                stream = io.StringIO(data)
+
+            return RestrictedUnpickler(stream).load()
+
+        pickle.loads = _safe_loads
+        pickle._patched = True
+
+    try:
+        import cPickle
+        if not getattr(cPickle, "_patched", False):
+            cPickle.loads = pickle.loads
+            cPickle._patched = True
+    except ImportError:
+        pass
+
     try:
         import builtins
     except ImportError:
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 7772bb7ebe..c26dc13e31 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -20,7 +20,7 @@
 from thirdparty import six
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.10.4.1"
+VERSION = "1.10.4.3"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)