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
3,352 results · Feed
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Medium 6.2
Deserialization of untrusted data vulnerability in Samsung Open Source Escargot Java Script allows denial of service co…
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Medium 4.1
Session Cache Restore — Arbitrary Free via Deserialized Pointer
When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted…
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Critical 9.4
Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection
A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an authenticated attacker with task creation permissions to execute arbitrary code, bypassing the nexus.scripts.allowCreation security control.
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Critical 9.8
PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading
PraisonAI is a multi-agent teams system. Prior to 4.5.115, the AgentService.loadAgentFromFile method uses the js-yaml library to parse YAML files without disabling dangerous tags (such as !!js/function and !!js/undefined). This allows an attacker to craft a m…
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High 7.5CVE-2026-23869 Public exploit
React Server Components have a Denial of Service Vulnerability
A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through …
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High 7.1
Mirror-registry: remote code execution using pickle deserialization
A flaw was found in Red Hat Quay's handling of resumable container image layer uploads. The upload process stores intermediate data in the database using a format that, if tampered with, could allow an attacker to execute arbitrary code on the Quay server.
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Critical 9.8CVE-2026-3296 Scanner template
Everest Forms <= 3.4.3 - Unauthenticated PHP Object Injection via Form Entry Metadata
The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's na…
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High 8.8
IBM Langflow Desktop FAISS Vector Store Remote Code Execution via malicious Pickle file
IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.
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Critical 9.3
Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM
Open Access Management (OpenAM) is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution (RCE) via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypas…
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Critical 9.3CVE-2026-39324 Public exploit
Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default deco…
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High 7.3
NVIDIA DALI contains a vulnerability where an attacker could cause a deserialization of untrusted data. A successful ex…
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High 7.5
pyLoad has an incomplete fix for CVE-2026-33509: unprotected storage_folder enables arbitrary file write to Flask session store and code execution
pyLoad is a free and open-source download manager written in Python. The fix for CVE-2026-33509 added an ADMIN_ONLY_OPTIONS set to block non-admin users from modifying security-critical config options. The storage_folder option is not in this set and passes t…
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Medium 6.5
Arbitrary Code Execution via Unsafe torch.load() in Trainer Checkpoint Loading in huggingface/transformers
A vulnerability in the HuggingFace Transformers library, specifically in the `Trainer` class, allows for arbitrary code execution. The `_load_rng_state()` method in `src/transformers/trainer.py` at line 3059 calls `torch.load()` without the `weights_only=True…
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Critical 9.8
Arbitrary Code Execution via Malicious Logging Configuration in Kedro
Kedro is a toolbox for production-ready data science. Prior to 1.3.0, Kedro allows the logging configuration file path to be set via the KEDRO_LOGGING_CONFIG environment variable and loads it without validation. The logging configuration schema supports the s…
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Medium 6.3
pytries datrie trie File datrie.pyx Trie.__setstate__ deserialization
A vulnerability was found in pytries datrie up to 0.8.3. The affected element is the function Trie.load/Trie.read/Trie.__setstate__ of the file src/datrie.pyx of the component trie File Handler. The manipulation results in deserialization. The attack can be l…
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High 7.3
FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization
A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vend…
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Medium 4.5
NASA cFS Pickle pickle.load deserialization
A vulnerability has been found in NASA cFS up to 7.0.0. The impacted element is the function pickle.load of the component Pickle Module. Such manipulation leads to deserialization. The attack needs to be performed locally. The attack requires a high level of …
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Low 3.7
Roundcube Webmail: Unsafe deserialization in the redis/memcache session handler
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.
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Critical 10.0CVE-2026-34838 Public exploit
Group-Office: Authenticated Remote Code Execution via PHP Insecure Deserialization in `AbstractSettingsCollection`
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.156, 25.0.90, and 26.0.12, a vulnerability in the AbstractSettingsCollection model leads to insecure deserialization when these settings are loaded. By in…
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High 7.2CVE-2026-29782 Public exploit
OpenSTAManager: Remote Code Execution via Insecure Deserialization in OAuth2
OpenSTAManager is an open source management software for technical assistance and invoicing. Prior to version 2.10.2, the oauth2.php file in OpenSTAManager is an unauthenticated endpoint ($skip_permissions = true). It loads a record from the zz_oauth2 table u…
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Critical 9.8
An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serial…
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Medium 6.5
Replicator 1.0.5 is vulnerable to Remote Code Execution through Insecure Deserialization
An unauthenticated remote code execution (RCE) vulnerability exists in applications that use the Replicator node package manager (npm) version 1.0.5 to deserialize untrusted user input and execute the resulting object.
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High 7.8
NVIDIA BioNeMo contains a vulnerability where a user could cause a deserialization of untrusted data. A successful expl…
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High 8.8
NVIDIA BioNeMo contains a vulnerability where a user could cause a deserialization of untrusted data. A successful expl…
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High 8.4
WatchGuard Firebox Insecure Deserialization in Fireware Access Portal
An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user. Note, this vulnerability …
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High 7.8
GIGABYTE｜Performance Library - Insecure Deserialization
The Performance Library component of Gigabyte Control Center has an Insecure Deserialization vulnerability. Authenticated local attackers can send a malicious serialized payload to the EasyTune Engine service, resulting in privilege escalation.
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Critical 9.8
GRID::Machine versions through 0.127 for Perl allows arbitrary code execution via unsafe deserialization
GRID::Machine versions through 0.127 for Perl allows arbitrary code execution via unsafe deserialization. GRID::Machine provides Remote Procedure Calls (RPC) over SSH for Perl. The client connects to remote hosts to execute code on them. A compromised or mali…
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Critical 9.3
dd-trace-java: Unsafe deserialization in RMI instrumentation may lead to remote code execution
dd-trace-java is a Datadog APM client for Java. In versions of dd-trace-java 0.40.0 through prior to 1.60.2, the RMI instrumentation registered a custom endpoint that deserialized incoming data without applying serialization filters. On JDK version 16 and ear…
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High 7.2CVE-2026-33725 Public exploit
Metabase vulnerable to RCE and Arbitrary File Read via H2 JDBC INIT Injection in EE Serialization Import
Metabase is an open source business intelligence and embedded analytics tool. In Metabase Enterprise prior to versions 1.54.22, 1.55.22, 1.56.22, 1.57.16, 1.58.10, and 1.59.4, authenticated admins on Metabase Enterprise Edition can achieve Remote Code Executi…
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Critical 9.3CVE-2026-33701 Public exploit
OpenTelemetry: Unsafe Deserialization in RMI Instrumentation may Lead to Remote Code Execution
OpenTelemetry Java Instrumentation provides OpenTelemetry auto-instrumentation and instrumentation libraries for Java. In versions prior to 2.26.1, the RMI instrumentation registered a custom endpoint that deserialized incoming data without applying serializa…
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Critical —
splunk-otel-javaagent: Unsafe deserialization in RMI instrumentation may lead to Remote Code Execution
In versions prior to 2.26.1, the RMI instrumentation registered a custom endpoint that deserialized incoming data without applying serialization filters. An attacker with network access to a JMX or RMI port on an instrumented JVM could exploit this to potenti…
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High 7.3
648540858 wvp-GB28181-pro API Endpoint RedisTemplateConfig.java GenericFastJsonRedisSerializer deserialization
A security flaw has been discovered in 648540858 wvp-GB28181-pro up to 2.7.4. This affects the function GenericFastJsonRedisSerializer of the file src/main/java/com/genersoft/iot/vmp/conf/redis/RedisTemplateConfig.java of the component API Endpoint. The manip…
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High 7.2
Frontend Admin by DynamiApps <= 3.28.31 - Authenticated (Editor+) PHP Object Injection via 'post_content' of Admin Form Posts
The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to PHP Object Injection via deserialization of the 'post_content' of admin_form posts in all versions up to, and including, 3.28.31. This is due to the use of WordPress's `maybe_unserialize()…
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High 8.1
Saloon has insecure deserialization in AccessTokenAuthenticator (object injection / RCE)
Saloon is a PHP library that gives users tools to build API integrations and SDKs. Versions prior to 4.0.0 used PHP's unserialize() in AccessTokenAuthenticator::unserialize() to restore OAuth token state from cache or storage, with allowed_classes => true. An…
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Critical 9.8
WordPress Pelicula theme < 1.10 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Edge-Themes Pelicula pelicula-video-production-and-movie-theme allows Object Injection.This issue affects Pelicula: from n/a through < 1.10.
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Medium 5.4
WordPress Stål theme < 1.7 - Arbitrary Object Instantiation vulnerability
Deserialization of Untrusted Data vulnerability in Mikado-Themes Stål stal allows Object Injection.This issue affects Stål: from n/a through < 1.7.
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High 8.8
WordPress JS Archive List plugin <= 6.1.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Miguel Useche JS Archive List jquery-archive-list-widget allows Object Injection.This issue affects JS Archive List: from n/a through <= 6.1.7.
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Medium 5.4
WordPress Gracey theme < 1.4 - Arbitrary Object Instantiation vulnerability
Deserialization of Untrusted Data vulnerability in Edge-Themes Gracey gracey allows Object Injection.This issue affects Gracey: from n/a through < 1.4.
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Medium 5.4
WordPress Kamperen theme < 1.3 - Arbitrary Object Instantiation vulnerability
Deserialization of Untrusted Data vulnerability in Edge-Themes Kamperen kamperen allows Object Injection.This issue affects Kamperen: from n/a through < 1.3.
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Medium 5.4
WordPress Halstein theme < 1.8 - Arbitrary Object Instantiation vulnerability
Deserialization of Untrusted Data vulnerability in Mikado-Themes Halstein halstein allows Object Injection.This issue affects Halstein: from n/a through < 1.8.