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
1,213 results · Clear filters · Feed
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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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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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Critical 9.8
WordPress Borgholm theme < 1.6 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Select-Themes Borgholm borgholm-marketing-agency-theme allows Object Injection.This issue affects Borgholm: from n/a through < 1.6.
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Critical 9.8
WordPress Bus Ticket Booking with Seat Reservation plugin <= 5.6.0 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in magepeopleteam Bus Ticket Booking with Seat Reservation bus-ticket-booking-with-seat-reservation allows Object Injection.This issue affects Bus Ticket Booking with Seat Reservation: from n/a through <= 5.6.0.
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Critical 9.8
WordPress Work & Travel Company theme <= 1.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Work & Travel Company work-travel-company allows Object Injection.This issue affects Work & Travel Company: from n/a through <= 1.2.
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Critical 9.8
WordPress Love Story theme <= 1.3.12 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Love Story lovestory allows Object Injection.This issue affects Love Story: from n/a through <= 1.3.12.
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Critical 9.8
WordPress Buisson theme <= 1.1.11 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Buisson buisson allows Object Injection.This issue affects Buisson: from n/a through <= 1.1.11.
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Critical 9.8
WordPress Nexa Blocks plugin <= 1.1.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in wpdive Nexa Blocks nexa-blocks allows Object Injection.This issue affects Nexa Blocks: from n/a through <= 1.1.1.
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Critical 9.8
WordPress Tasty Daily theme < 1.27 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in park_of_ideas Tasty Daily tastydaily allows Object Injection.This issue affects Tasty Daily: from n/a through < 1.27.
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Critical 9.8
WordPress Goldish theme < 3.47 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in park_of_ideas Goldish goldish allows Object Injection.This issue affects Goldish: from n/a through < 3.47.
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Critical 9.8
WordPress Ricky theme < 2.31 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in park_of_ideas Ricky ricky allows Object Injection.This issue affects Ricky: from n/a through < 2.31.
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Critical 9.8
WordPress KIDZ theme <= 5.24 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in park_of_ideas KIDZ kidz allows Object Injection.This issue affects KIDZ: from n/a through <= 5.24.
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Critical 9.8
WordPress SUMO Affiliates Pro plugin < 11.4.0 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in FantasticPlugins SUMO Affiliates Pro affs allows Object Injection.This issue affects SUMO Affiliates Pro: from n/a through < 11.4.0.
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Critical 9.8
WordPress EventPrime plugin <= 4.2.8.0 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Metagauss EventPrime eventprime-event-calendar-management allows Object Injection.This issue affects EventPrime: from n/a through <= 4.2.8.0.
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Critical 9.8
WordPress Beelove theme <= 1.2.6 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in AncoraThemes Beelove beelove allows Object Injection.This issue affects Beelove: from n/a through <= 1.2.6.
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Critical 9.8
WordPress m2 | Construction and Tools Store theme <= 1.1.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in axiomthemes m2 | Construction and Tools Store m2-ce allows Object Injection.This issue affects m2 | Construction and Tools Store: from n/a through <= 1.1.2.
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Critical 9.0
NVIDIA APEX for Linux contains a vulnerability where an unauthorized attacker could cause a deserialization of untruste…
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Critical 9.8
WordPress Finag theme <= 1.5.0 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Themeton Finag allows Object Injection.This issue affects Finag: from n/a through 1.5.0.
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Critical 9.8
WordPress Zuut theme <= 1.4.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Themeton Zuut allows Object Injection.This issue affects Zuut: from n/a through 1.4.2.
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Critical 9.8
OmniGen2-RL Reward Server Unsafe Deserialization RCE
OmniGen2-RL contains an unauthenticated remote code execution vulnerability in the reward server component that allows remote attackers to execute arbitrary commands by sending malicious HTTP POST requests. Attackers can exploit insecure pickle deserializatio…
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Critical 9.8
WordPress Traveler theme < 3.2.8.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in shinetheme Traveler traveler allows Object Injection.This issue affects Traveler: from n/a through < 3.2.8.1.
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Critical 9.1CVE-2026-25769 Public exploit
Wazuh Cluster vulnerable to Remote Code Execution via Insecure Deserialization
Wazuh is a free and open source platform used for threat prevention, detection, and response. Versions 4.0.0 through 4.14.2 have a Remote Code Execution (RCE) vulnerability due to Deserialization of Untrusted Data). All Wazuh deployments using cluster mode (m…
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Critical 9.8
CVE-2026-3060
SGLang' encoder parallel disaggregation system is vulnerable to unauthenticated remote code execution through the disaggregation module, which deserializes untrusted data using pickle.loads() without authentication.
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Critical 9.8
CVE-2026-3059
SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker, which deserializes untrusted data using pickle.loads() without authentication.
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Critical 9.1
Insecure Deserialization in SAP NetWeaver Enterprise Portal Administration
SAP NetWeaver Enterprise Portal Administration is vulnerable if a privileged user uploads untrusted or malicious content that, upon deserialization, could result in a high impact on the confidentiality, integrity, and availability of the host system.
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Critical 9.8
A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code …
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Critical 9.8
Database for Contact Form 7, WPforms, Elementor forms <= 1.4.7 - Unauthenticated PHP Object Injection via 'download_csv'
The Database for Contact Form 7, WPforms, Elementor forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.7 via deserialization of untrusted input in the 'download_csv' function. This makes it possible for …
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Critical 9.8
WordPress Good Energy theme <= 1.7.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Good Energy goodenergy allows Object Injection.This issue affects Good Energy: from n/a through <= 1.7.7.
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Critical 9.8
WordPress Pizza House theme <= 1.4.0 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Pizza House pizzahouse allows Object Injection.This issue affects Pizza House: from n/a through <= 1.4.0.
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Critical 9.8
WordPress Dentario theme <= 1.5 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Dentario dentario allows Object Injection.This issue affects Dentario: from n/a through <= 1.5.
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Critical 9.8
WordPress Kingler theme <= 1.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Kingler kingler allows Object Injection.This issue affects Kingler: from n/a through <= 1.7.
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Critical 9.8
WordPress Tennis Club theme <= 1.2.3 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Tennis Club tennis-sportclub allows Object Injection.This issue affects Tennis Club: from n/a through <= 1.2.3.
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Critical 9.8
WordPress Sweet Date theme < 4.0.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in SeventhQueen Sweet Date sweetdate allows Object Injection.This issue affects Sweet Date: from n/a through < 4.0.1.
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Critical 9.8
WordPress Mounthood theme <= 1.3.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in axiomthemes Mounthood mounthood allows Object Injection.This issue affects Mounthood: from n/a through <= 1.3.2.
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Critical 9.8
WordPress Jardi theme <= 1.7.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in AncoraThemes Jardi jardi allows Object Injection.This issue affects Jardi: from n/a through <= 1.7.2.
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Critical 9.8
WordPress Estate theme <= 1.3.4 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in axiomthemes Estate estate allows Object Injection.This issue affects Estate: from n/a through <= 1.3.4.
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Critical 9.8
WordPress Equestrian Centre theme <= 1.5 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Equestrian Centre equestrian-centre allows Object Injection.This issue affects Equestrian Centre: from n/a through <= 1.5.
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Critical 9.8
WordPress Solaris theme <= 2.5 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Solaris solaris allows Object Injection.This issue affects Solaris: from n/a through <= 2.5.
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Critical 9.8
WordPress Pets Club theme <= 2.3 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Pets Club petclub allows Object Injection.This issue affects Pets Club: from n/a through <= 2.3.
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Critical 9.8
WordPress Handyman theme <= 1.4.7 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in AncoraThemes Handyman handyman-services allows Object Injection.This issue affects Handyman: from n/a through <= 1.4.7.