Weakness (CWE)
CWE-502: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How to prevent it (7 mitigations)
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Architecture and Design, Implementation
If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
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Implementation
When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
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Implementation
Explicitly define a final object() to prevent deserialization.
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Architecture and Design, Implementation
Make fields transient to protect them from deserialization.
An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
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Implementation
Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.
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Architecture and Design, Implementation
Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.
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Operation
Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
Source: MITRE CWE-502
3,347 results · Feed
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High 8.1CVE-2026-42527 Public exploit
Apache Camel: Permissive default ObjectInputFilter pattern admits java.net.** and enables DNS-based information disclosure
Deserialization of Untrusted Data vulnerability in Apache Camel. The default ObjectInputFilter pattern shipped with several Apache Camel components for defense-in-depth deserialization filtering ('java.**;javax.**;org.apache.camel.**;!*', or the no-'javax.**'…
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High 8.1CVE-2026-40859 Public exploit
Apache Camel: Camel-Vertx-Http: Unsafe Java deserialization of HTTP response bodies via a raw ObjectInputStream when transferException is enabled
Deserialization of Untrusted Data vulnerability in Apache Camel. The camel-vertx-http component deserializes HTTP response bodies carrying the Content-Type application/x-java-serialized-object using a raw java.io.ObjectInputStream, without applying any Object…
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Medium 5.3
AD-Security AD_Miner Cache analyse_cache.py request_a deserialization
A vulnerability was determined in AD-Security AD_Miner 1.9.0. Affected is the function request_a of the file ad_miner/scripts/analyse_cache.py of the component Cache Handler. This manipulation of the argument sys.argv[1] causes deserialization. The attack can…
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High 8.2
kirilkirkov Ecommerce-CodeIgniter-Bootstrap ShoppingCart.php getCartItems deserialization
A security vulnerability has been detected in kirilkirkov Ecommerce-CodeIgniter-Bootstrap up to 13fd582aaf49aeab7438acc0fc3eb973a1f5e6a7. The affected element is the function getCartItems in the library application/libraries/ShoppingCart.php. The manipulation…
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High 8.8
Fickling check_safety() bypass via unlisted standard library modules (_posixsubprocess, site, atexit)
Trail of Bits fickling versions up to and including 0.1.10 do not include the Python standard library modules _posixsubprocess, site, and atexit in the UNSAFE_IMPORTS denylist (fickle.py). Because these modules are absent from the denylist, fickling's check_s…
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High 8.1
picklescan - Undetected Remote Code Execution via _operator.methodcaller
picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when scanning pickle files for malicious code. Attackers can craft malicious pickle payloads using _operator.methodcaller that evade detection and execute arbitrary code whe…
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High 8.1
picklescan - Remote Code Execution via operator.methodcaller Detection Bypass
picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle payloads using operator.methodcaller that execute arbitrary code when load…
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High 8.1
Picklescan - Arbitrary Code Execution via numpy.f2py.crackfortran.getlincoef Gadget
Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.getlincoef gadget in pickle __reduce__ methods, allowing arbitrary code execution. Attackers can craft malicious pickle files that execute arbitrary Python code when loaded, bypassing Pickle…
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High 8.1
picklescan - Unsafe Deserialization via torch.utils.data.datapipes.utils.decoder.basichandlers
picklescan before 0.0.28 fails to detect malicious pickle files that use torch.utils.data.datapipes.utils.decoder.basichandlers in reduce methods, allowing attackers to bypass safety checks. Remote attackers can embed undetected malicious code in pickle files…
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High 8.1
picklescan - Remote Code Execution via _operator.attrgetter Detection Bypass
picklescan before 0.0.34 fails to detect _operator.attrgetter function calls in pickle payloads, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using _operator.attrgetter in reduce methods to execute arbitrary …
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High 8.1
picklescan - Arbitrary Code Execution via torch.utils.bottleneck.__main__.run_cprofile
picklescan before 0.0.28 fails to detect malicious torch.utils.bottleneck.__main__.run_cprofile function calls in pickle files, allowing attackers to bypass safety checks. Remote attackers can embed undetected code in pickle files to achieve arbitrary code ex…
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High 8.1
picklescan - Arbitrary Code Execution via Unsafe Deserialization in numpy.f2py.crackfortran
picklescan before 0.0.33 fails to detect unsafe deserialization when numpy.f2py.crackfortran functions call eval on arbitrary strings. Attackers can embed malicious code in pickle files that executes when loaded from untrusted sources.
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High 8.1
picklescan - Arbitrary Code Execution via Undetected asyncio.unix_events._UnixSubprocessTransport._start
picklescan before 0.0.30 fails to detect the asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce methods, allowing remote code execution. Attackers can craft malicious pickle files embedding this built-in function that evade detectio…
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High 8.1
picklescan - Remote Code Execution via Undetected idlelib.calltip.get_entity
picklescan before 0.0.29 fails to detect malicious pickle files using idlelib.calltip.get_entity function in reduce methods. Attackers can embed undetected code in pickle files that executes remote commands when loaded by victims.
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High 8.1
picklescan - Arbitrary Code Execution via torch.fx.experimental.symbolic_shapes.ShapeEnv.evaluate_guards_expression
picklescan before 0.0.28 fails to detect malicious torch.fx.experimental.symbolic_shapes.ShapeEnv.evaluate_guards_expression function calls in pickle files. Attackers can embed undetected code in pickle files that executes remote code when loaded by victims.
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High 8.1
picklescan - Unsafe Deserialization via lib2to3.pgen2.grammar.Grammar.loads
picklescan before 0.0.29 fails to detect malicious pickle payloads that utilize lib2to3.pgen2.grammar.Grammar.loads in the reduce method, allowing remote code execution. Attackers can craft pickle files embedding dangerous code that evades picklescan detectio…
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High 8.1
picklescan - Remote Code Execution via torch._dynamo.guards.GuardBuilder.get
picklescan before 0.0.28 fails to detect malicious pickle files that exploit torch._dynamo.guards.GuardBuilder.get function in reduce methods. Attackers can craft pickle files with embedded code that evades picklescan detection and executes arbitrary commands…
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High 8.1
picklescan - Arbitrary Code Execution via torch.utils.bottleneck.__main__.run_autograd_prof
picklescan before 0.0.30 fails to detect malicious pickle files that invoke torch.utils.bottleneck.__main__.run_autograd_prof function. Attackers can embed undetected code in pickle files that executes during deserialization, enabling remote code execution.
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High 8.1
picklescan - Undetected Remote Code Execution via numpy.f2py.crackfortran.param_eval
picklescan before 0.0.33 fails to detect malicious pickle files using numpy.f2py.crackfortran.param_eval function in reduce methods, allowing attackers to bypass security checks. Remote attackers can embed undetected code in pickle files that executes during …
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High 8.1
picklescan - Arbitrary Code Execution via lib2to3.pgen2.pgen.ParserGenerator.make_label Detection Bypass
picklescan before 0.0.30 fails to detect malicious pickle files that exploit lib2to3.pgen2.pgen.ParserGenerator.make_label function in the reduce method. Attackers can craft malicious pickle files with embedded code that evades detection but executes arbitrar…
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High 8.1
picklescan - Undetected Remote Code Execution via idlelib.run.Executive.runcode
picklescan before 0.0.30 fails to detect malicious pickle files using idlelib.run.Executive.runcode in reduce methods. Attackers can embed undetected code in pickle files that executes during pickle.load, enabling remote code execution in PyTorch models and s…
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High 8.8
Deserialization of Untrusted Data in keras-team/keras
A vulnerability in keras-team/keras version 3.14.0 allows for arbitrary code execution due to improper handling of deserialization in the `Lambda` layer. Specifically, the `_raise_for_lambda_deserialization()` function fails to enforce the safe-mode guard whe…
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Medium 6.9
WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
An authenticated administrator can trigger a denial-of-service condition in the Fireware Management Web UI by sending malformed or crafted data to the put_data endpoint, which performs unsafe deserialization of the attacker-supplied input.
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High 8.8
WordPress Themify Popup plugin <= 1.4.3 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Themify Themify Popup allows Object Injection. This issue affects Themify Popup: from n/a through 1.4.3.
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Critical 9.8
WordPress Novalnet Payment Gateway for WooCommerce plugin <= 12.10.3 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Novalnet Payment Gateway for WooCommerce <= 12.10.3 versions.
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Critical 9.8
WordPress Booktics plugin <= 1.0.21 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Booktics <= 1.0.21 versions.
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High 8.8
WordPress Werkstatt theme <= 4.8.3 - PHP Object Injection vulnerability
Contributor PHP Object Injection in Werkstatt <= 4.8.3 versions.
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High 8.8
WordPress ARMember Premium plugin < 7.6 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Repute Infosystems ARMember Premium allows Object Injection. This issue affects ARMember Premium: from n/a before 7.6.
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High 7.1
mchange-commons-java contains elements susceptible to abuse via JNDI injection and "deserialization gadgets"
mchange-commons-java is a Java library of shared utility classes used by mchange projects like the c3p0 connection pool. Prior to version 0.6.0, its JNDI ObjectFactory implementation (com.mchange.v2.naming.JavaBeanObjectFactory) will construct objects of arbi…
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High 7.5
RCE via Deserialization in AWS Advanced JDBC Wrapper
Deserialization of untrusted data in the RemoteQueryCachePlugin in Amazon Web Services AWS Advanced JDBC Wrapper 3.3.0 through 4.0.0 might allow an actor with write access to the shared cache infrastructure to execute arbitrary code on application servers tha…
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High 8.8
Ray < 2.56.0 Unsafe Deserialization RCE via WebDataset Reader
Ray prior to 2.56.0 contains an unsafe deserialization vulnerability in the WebDataset reader that allows attackers to achieve remote code execution by supplying a malicious tar archive to the read_webdataset() function. The _default_decoder() function in web…
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Medium 5.9CVE-2026-58025 Public exploit
Remote Code Execution via Unsafe Deserialization in LogItem Import
Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/WikiImporter.Php, includes/Import/WikiRevision.Php, includes/Logging/LogEntryBase.Php. This issue affects Me…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause improper control of dynamically…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause improper validation of allowed …
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted da…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted da…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted da…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted da…
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High 7.8
NVIDIA Megatron Bridge for Linux contains a vulnerability where an attacker could cause deserialization of untrusted da…
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Critical 9.8
PACSgear MediaWriter 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service
PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll, registered with ObjectURIs RemoteObj and UIRemoteObj, without any authentication requirement. By exploiting the MarshalByRefObject object unmarshall…