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
329 results · Clear filters · Feed
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High 8.1CVE-2026-43865 Public exploit
Apache Camel: Camel-Hazelcast: Unsafe Java deserialization in default-configured managed Hazelcast instances enables remote code execution
Deserialization of Untrusted Data vulnerability in Apache Camel Hazelcast component. The camel-hazelcast component creates and manages Hazelcast instances using a default configuration that applies no Java deserialization filter. When Camel builds the Hazelca…
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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 5.9CVE-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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Critical 9.8CVE-2026-51947 Public exploit
An issue in Pivotal CRM 6.6.4.08 and systems using patch-ghi-15381-cwe-502-20251225.zip (fixed in Pivotal CRM 6.6.5.10 …
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Critical 9.8CVE-2026-56121 Public exploit
Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization
Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body field of an On…
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High 8.1CVE-2026-54512 Public exploit
jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbitrary class instantiation
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.10.0 until 2.18.8, 2.21.4, and 3.1.4, jackson-databind's PolymorphicTypeValidator (PTV) is the primary safety mechanism guarding polymor…
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High 8.1CVE-2026-39253 Public exploit
An issue in Pivotal CRM v.6.6.04.08 allows a remote attacker to execute arbitrary code via the Pivotal.Core.Common.dll …
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Critical 9.2CVE-2026-45034 Public exploit
PhpSpreadsheet: File::prohibitWrappers bypass
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.5, CVE-2026-34084 was patched by the helper File::prohibitWrappers. The helper calls parse_url($filename, PHP_URL_SCHEME) and then checks is_string($scheme) && strle…
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Critical 9.5CVE-2026-48909 Public exploit
Joomla Extension - joomshaper.com - PHP Object injection in SP LMS extension for Joomla < 4.1.4
SP LMS (com_splms) < 4.1.4 by JoomShaper deserializes user-controlled cookie data without validation, enabling an unauthenticated remote attacker to execute arbitrary code on the server.
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Critical 9.8CVE-2026-53805 Public exploit
NVIDIA SIL GEN3C Unauthenticated RCE via Pickle Deserialization in Inference API
NVIDIA Spatial Intelligence Lab's (SIL) GEN3C contains an unauthenticated remote code execution vulnerability in the inference API server where the /request-inference and /seed-model endpoints deserialize raw HTTP request bodies using Python's pickle.loads() …
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Critical 9.8CVE-2026-54806 Public exploit
WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in WP Activity Log <= 5.6.3.1 versions.
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Critical 9.8CVE-2026-49105 Public exploit
WordPress WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms plugin <= 1.1.4 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms <= 1.1.4 versions.
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Critical 9.8CVE-2026-49104 Public exploit
WordPress Integration for Keap/infusionsoft and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms plugin <= 1.2.1 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Integration for Keap/infusionsoft and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms <= 1.2.1 versions.
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Critical 9.8CVE-2026-49085 Public exploit
WordPress WP Insightly for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms plugin <= 1.1.4 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in WP Insightly for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms <= 1.1.4 versions.
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Critical 9.8CVE-2026-9691 Public exploit
WordPress Integration for ActiveCampaign and Contact Form 7, WPForms, Elementor, Ninja Forms plugin <= 1.1.1 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Integration for ActiveCampaign and Contact Form 7, WPForms, Elementor, Ninja Forms <= 1.1.1 versions.
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High 7.8CVE-2026-12191 Public exploit
Comma AI Openpilot Pickle modeld.py pickle.loads deserialization
A vulnerability was found in Comma AI Openpilot 0.11. This issue affects the function pickle.load/pickle.loads of the file selfdrive/modeld/modeld.py of the component Pickle Module. The manipulation results in deserialization. The attack is only possible with…
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High 8.8
Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, Splunk Cloud Platform versions below 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, and Splunk Secure Gateway versions below 3.10.6, 3.9.20, and 3.8.67, a low-privileged user…
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High 8.8
Jenkins arbitrary type deserialization from attacker-controlled config.xml allows remote code execution and user impersonation
In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP req…
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Critical 9.4CVE-2026-44963 Public exploit
A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.
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High 8.8CVE-2026-7654 Public exploit
Admin Columns <= 7.0.18 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution via Custom Field Meta Value
The Admin Columns plugin for WordPress is vulnerable to PHP Object Injection leading to Remote Code Execution in versions up to and including 7.0.18. This is due to the use of `unserialize()` without an `allowed_classes` restriction in the `IdsToCollection::g…
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Critical 9.8
Mirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection
Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie. A…
KEV Jun 3, 2026 -
High 7.8CVE-2026-4372 Public exploit
Arbitrary Remote Code Execution via `_attn_implementation_internal` Config Injection in huggingface/transformers
A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious `config.json` file containing the `_attn_implementation_internal` f…
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High 8.8
Microsoft SharePoint Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
KEV Jul 1, 2026 -
High 8.7CVE-2026-6009 Public exploit
Jaspersoft Library Deserialisation Vulnerability
Java Deserialisation Vulnerability in Jaspersoft Reports Library leads to Remote Code Execution (RCE), potentially allowing code execution on the affected system
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Critical 10.0
ChromaDB Python project has a pre-authentication code injection vulnerability
A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code set to true in the…
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High 7.3CVE-2024-53326 Public exploit
LINQPad before 5.52.01 Pro edition is vulnerable to Unsafe Deserialization in LINQPad.AutoRefManager::PopulateFromCache…
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Critical 9.1CVE-2025-69690 Public exploit
Netgate pfSense CE 2.7.2 allows code execution by using the module installer with a backup file with a serialized PHP o…
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Critical 9.8CVE-2026-42778 Public exploit
Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)
The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deseri…
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Critical 9.8CVE-2026-42779 Public exploit
Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter — Full Object Deserialization RCE (take 2)
The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the cl…
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High 8.1CVE-2026-42471 Public exploit
Unsafe deserialization vulnerability in MixPHP Framework 2.x thru 2.2.17. The sync-invoke client (Connection.php:76) ca…
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High 8.8CVE-2026-27172 Public exploit
Apache Camel: Unsafe Java deserialization in camel-consul ConsulRegistry allows arbitrary code execution via malicious values read from the Consul KV store
The ConsulRegistry in the camel-consul component (class org.apache.camel.component.consul.ConsulRegistry and its inner ConsulRegistryUtils.deserialize method) read Java-serialized values from the Consul KV store and passed them to ObjectInputStream.readObject…
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Critical 9.4CVE-2026-33454 Public exploit
Apache Camel: Inbound Header Filter Missing in MailHeaderFilterStrategy Allows Remote Code Execution via MIME Header Injection (CVE-2025-30177 Variant)
The Camel-Mail component is vulnerable to Camel message header injection. The custom header filter strategy used by the component (MailHeaderFilterStrategy) only filters the 'out' direction via setOutFilterStartsWith, while it does not configure the 'in' dire…
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High 8.8CVE-2026-40858 Public exploit
Apache Camel: Camel-Infinispan: Unsafe Deserialization in Remote Aggregation Repository
The camel-infinispan component's ProtoStream-based remote aggregation repository deserializes data read from a remote Infinispan cache using java.io.ObjectInputStream without applying any ObjectInputFilter. An attacker who can write to the Infinispan cache us…
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Critical 9.8CVE-2026-40860 Public exploit
Apache Camel: Unsafe Deserialization of JMS ObjectMessage in camel-jms, camel-sjms, camel-sjms2 and camel-amqp
JmsBinding.extractBodyFromJms() in camel-jms, and the equivalent JmsBinding class in camel-sjms, deserialized the payload of incoming JMS ObjectMessage values via javax.jms.ObjectMessage.getObject() without applying any ObjectInputFilter, class allowlist or c…
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High 7.8CVE-2026-40048 Public exploit
Apache Camel PQC: Unsafe Deserialization from FileBasedKeyLifecycleManager
The Camel-PQC FileBasedKeyLifecycleManager class deserializes the contents of `<keyId>.key` files in the configured key directory using java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. The cast to `java.security.…
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High 8.8CVE-2026-40473 Public exploit
Apache Camel Mina: Unsafe Deserialization in MinaConverter.toObjectInput() via TCP/UDP
The camel-mina component's MinaConverter.toObjectInput(IoBuffer) type converter wraps an IoBuffer in a java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. When a Camel route uses camel-mina as a TCP or UDP consumer …
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High 7.5CVE-2026-6857 Public exploit
Camel-infinispan: camel-infinispan: remote code execution via unsafe deserialization
A flaw was found in camel-infinispan. This vulnerability involves unsafe deserialization in the ProtoStream remote aggregation repository. A remote attacker with low privileges could exploit this by sending specially crafted data, leading to arbitrary code ex…
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High 8.1CVE-2026-6023 Public exploit
Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX
In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to insecure deserialization when restoring filter state if the state is exposed to the client. If an attacker tampers with this state, a server-side…
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High 7.5CVE-2026-22016 Public exploit
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java S…