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
3,342 results · Feed
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High 7.8
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Core). The…
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High 7.8
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Image Expo…
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High 7.8
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Image Expo…
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Low 3.7
Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 21.0.12…
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Low 1.3
Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with specially crafted sequence values
Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to cause a denial of service via memory exhaustion. Users are recommended to upgrade to version 3.5.3, which fixes this issue.
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High 7.5
DokuWiki before 2026-07-14c PHP Object Injection via Draft Race Condition
DokuWiki before 2026-07-14c contains a PHP object injection vulnerability in Draft::getDraftText() that passes draft file contents to unserialize() without restricting allowed classes. Authenticated users with edit rights can race concurrent draft rewrites to…
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High 8.8
Uniong｜WebITR - Insecure Deserialization
WebITR developed by Uniong has a Insecure Deserialization vulnerability. Authenticated remote attackers can use the hard-coded cryptographic key to craft and submit malicious serialized data, thereby executing arbitrary code on the server.
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High 7.5
IBM MQ Deserialization of Untrusted Data
IBM MQ Operator could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to unrestricted Java deserialization in the MQ Classes for Java.
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Medium 6.5
IBM MQ Deserialization of Untrusted Data
IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.
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Medium 6.5
IBM MQ Deserialization of Untrusted Data
IBM MQ could allow an authenticated attacker to cause a denial of service by sending a specially crafted asynchronous consume request that crashes the queue manager agent process.
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High 7.5
docTR through 1.1.0 Unsafe Deserialization RCE via load_pretrained_params()
docTR through 1.1.0 contains an unsafe deserialization vulnerability in load_pretrained_params() that loads checkpoints with torch.load without weights_only=True. Attackers who control a local or URL-supplied checkpoint can embed a malicious pickle payload to…
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High 8.8CVE-2026-88900 Public exploit
Apache Camel: Camel-JGroups: Unsafe Java Deserialization of Cluster Messages in the JGroups Consumer Can Lead to Remote Code Execution
Deserialization of Untrusted Data vulnerability in Apache Camel Camel-Jgroups component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. JGroupsEndpoint.createExchange(Message), which CamelJGroupsReceiver calls for every …
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High 8.8CVE-2026-78165 Public exploit
Apache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
Deserialization of Untrusted Data vulnerability in Apache Camel Spring Redis component. This issue affects Apache Camel: from 2.11.0 before 4.18.5, from 4.19.0 before 4.22.1. RedisConfiguration.getSerializer lazily built a bare JdkSerializationRedisSerializer…
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Critical 10.0CVE-2026-78162 Public exploit
Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
Deserialization of Untrusted Data vulnerability in Apache Camel. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The camel-hazelcast component applies a default Hazelcast JavaSerializationFilterConfig to the instances it …
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High 8.8
WordPress Quiz And Survey Master plugin <= 11.2.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.
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Medium 6.3
ESPnet Inference Model inference_model.py build_model deserialization
A vulnerability was found in ESPnet up to 202610.post2. This affects the function build_model of the file espnet3/publication/inference_model.py of the component Inference Model Handler. The manipulation of the argument _target_ results in deserialization. It…
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Medium 6.3
hankcs HanLP Model Config Loading reflection.py hanlp.load deserialization
A vulnerability was determined in hankcs HanLP up to 2.1.0-beta.64. This affects the function hanlp.load of the file plugins/hanlp_common/hanlp_common/reflection.py of the component Model Config Loading. This manipulation of the argument classpath causes dese…
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Medium 6.3
hankcs HanLP torch_util.py load_word2vec_as_vocab_tensor deserialization
A vulnerability has been found in hankcs HanLP up to 2.1.0-beta.64. The affected element is the function load_word2vec_as_vocab_tensor of the file hanlp/utils/torch_util.py. The manipulation of the argument vectors.vocab leads to deserialization. The attack i…
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High 8.8
WordPress Strong Testimonials plugin <= 3.3.12 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in WP Chill Strong Testimonials strong-testimonials allows Object Injection.This issue affects Strong Testimonials: from n/a through 3.3.12.
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Critical 9.8
WordPress Conversational Forms for ChatBot plugin <= 1.5.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in QuantumCloud Conversational Forms for ChatBot conversational-forms allows Object Injection.This issue affects Conversational Forms for ChatBot: from n/a through 1.5.1.
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Medium 6.3
datastax pulsar-jms PulsarObjectMessage.java decode deserialization
A vulnerability was determined in datastax pulsar-jms up to 9.0.3. This issue affects the function decode of the file pulsar-jms/src/main/java/com/datastax/oss/pulsar/jms/messages/PulsarObjectMessage.java. This manipulation causes deserialization. It is possi…
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Medium 6.6
Frontend Admin by DynamiApps <= 3.29.13 - Admin+ PHP Object Injection
The ACF Frontend Admin by DynamiApps WordPress plugin through 3.29.13 does not restrict which PHP classes may be instantiated when it deserialises stored post content that is rendered on public-facing pages, allowing high-privilege users such as administrator…
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Critical 9.8
LearnPress <= 4.4.10 - Unauthenticated PHP Object Injection via 'checkout-email' Parameter
The LearnPress plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.4.10 via deserialization of untrusted input from the 'checkout-email' request parameter during the checkout AJAX action. The value is passed through …
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High 7.2
Kirki <= 6.3.2 - Authenticated (Administrator+) PHP Object Injection via Deserialization of Untrusted Input via ZIP Template Import
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers,…
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Medium 5.0
10up Distributor before 2.3.2 PHP Object Injection via set_meta()
10up Distributor before 2.3.2 contains a PHP object injection vulnerability that allows Contributor-level users to instantiate PHP objects by double unserializing distributed post meta. Attackers can store a serialized PHP string as meta, which set_meta() in …
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Critical 9.8
Apache Kylin: Redis unsafe Java deserialization
Deserialization of Untrusted Data vulnerability in Apache Kylin. Unsafe Java deserialization could happen from a broken external cache service. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fix…
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High 8.1
WordPress Gravity Forms plugin < 3.1.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Rocketgenius, Inc Gravity Forms gravityforms allows Object Injection.This issue affects Gravity Forms: from n/a before 3.1.1.
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Critical 9.8
Sunshine Photo Cart <= 3.7.4 - Unauthenticated PHP Object Injection via 'key' Parameter
The Sunshine Photo Cart – Client Photo Gallery & Photo Proofing for Photographers plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.7.4 via deserialization of untrusted input . This makes it possible for unauth…
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High 8.0
Search Regex 3.5 - Authenticated (Subscriber+) Remote Code Execution via User Meta Serialized String Corruption
The Search Regex plugin for WordPress is vulnerable to PHP Object Injection in version 3.5 via deserialization of untrusted input in the replace_all function. This allows authenticated attackers, with subscriber-level access and above, to inject a PHP Object.…
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High 8.0
A potential vulnerability was reported in the Lenovo Legion Zone application, distributed exclusively in the Chinese ma…
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High 7.5
LightLLM through 1.2.0 Unauthenticated DoS via pd_kv_trans_params Deserialization
LightLLM through 1.2.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the inference worker by supplying the internal pd_kv_trans_params field to the /generate endpoint. Attackers can send a single request whose param…
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Medium 6.6
Dolibarr before 23.0.4 PHP Object Injection via jsonOrUnserialize()
Dolibarr before 23.0.4 contains a PHP object injection vulnerability in jsonOrUnserialize() in functions.lib.php, which calls unserialize() without class restrictions when json_decode() fails. Attackers able to write stored extrafields, export configurations …
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Critical 9.3
runwasi: Forged Wasmtime precompiled OCI layer bypasses runwasi WASI sandbox
runwasi facilitates running Wasm and WASI workloads managed by containerd. Prior to 0.6.1, containerd-shim-wasmtime-v1 can treat Wasmtime precompiled bytes supplied directly in an OCI image layer as a trusted artifact from the precompile-cache path and deseri…
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Critical 9.9
Deserialization of untrusted data in the Gremlin graph-import path in Amazon Neptune
Deserialization of untrusted data in the Gremlin graph data import component in Amazon Neptune engine might allow an authenticated remote actor with standard database permissions to execute arbitrary code and access internal service credentials. To remediate …
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High 8.1
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build mess…
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Critical 9.1
EspoCRM: Authenticated RCE via Unsafe PHP Object Deserialization in MassAction/Export params
EspoCRM is an open source customer relationship management application. Prior to 9.3.7, an authenticated administrator can supply crafted serialized PHP object data that is stored in background MassAction or Export parameters and later deserialized by the app…
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Critical 9.8
WordPress Link Whisper Free plugin <= 0.9.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Link Whisper INC Link Whisper Free link-whisper allows Object Injection.This issue affects Link Whisper Free: from n/a through 0.9.7.
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Critical 9.2
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x DB2 client …
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High 8.8
ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
ILIAS before 9.24, 10.12, and 11.5 contains a PHP object injection vulnerability that allows authenticated users with Test creation or import permission to deserialize arbitrary objects via crafted Test archives. Attackers can inject a malicious tst_sequence …
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Critical 9.8
e107: Unsafe deserialization in install.php allows unauthenticated RCE via POP chain
e107 is a content management system (CMS). Prior to 2.3.7, install.php decodes the attacker-controlled previous_steps POST parameter and passes it to unserialize() at file scope and again in the e_install constructor without restricting allowed classes. The i…