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
3,354 results · Feed
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Critical 9.8CVE-2024-28988 EPSS 42%
SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability
SolarWinds Web Help Desk was found to be susceptible to a Java Deserialization Remote Code Execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability was found by the ZDI team after researching …
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Critical 9.8CVE-2025-6507 EPSS 17%
Deserialization of Untrusted Data in h2oai/h2o-3
A vulnerability in the h2oai/h2o-3 repository allows attackers to exploit deserialization of untrusted data, potentially leading to arbitrary code execution and reading of system files. This issue affects the latest master branch version 3.47.0.99999. The vul…
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High 8.8
WordPress WpEvently Plugin <= 4.4.8 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in magepeopleteam WpEvently mage-eventpress allows Object Injection.This issue affects WpEvently: from n/a through <= 4.4.8.
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High 8.1
WordPress Employee Spotlight Plugin <= 5.1.1 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in emarket-design Employee Spotlight employee-spotlight allows Object Injection.This issue affects Employee Spotlight: from n/a through <= 5.1.1.
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High 8.1
WordPress WP Ticket Customer Service Software & Support Ticket System Plugin <= 6.0.2 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in emarket-design WP Ticket Customer Service Software & Support Ticket System wp-ticket allows Object Injection.This issue affects WP Ticket Customer Service Software & Support Ticket System: from n/a through <=…
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High 8.1
WordPress WP Easy Contact Plugin <= 4.0.1 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in emarket-design WP Easy Contact wp-easy-contact allows Object Injection.This issue affects WP Easy Contact: from n/a through <= 4.0.1.
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High 8.1
WordPress Employee Directory – Staff Listing & Team Directory plugin for WordPress plugin <= 4.5.5 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in emarket-design Employee Directory – Staff Listing & Team Directory Plugin for WordPress employee-directory allows Object Injection.This issue affects Employee Directory – Staff Listing & Team Directory Plugin…
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Critical 9.8
WordPress WP Funnel Manager Plugin <= 1.4.0 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in manfcarlo WP Funnel Manager wp-funnel-manager allows Object Injection.This issue affects WP Funnel Manager: from n/a through <= 1.4.0.
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Critical 10.0
H3C Intelligent Management Center (iMC) /byod/index.xhtml RCE
H3C Intelligent Management Center (IMC) versions up to and including E0632H07 contains a remote command execution vulnerability in the /byod/index.xhtml endpoint. Improper handling of JSF ViewState allows unauthenticated attackers to craft POST requests with …
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High 7.2
WordPress Small Package Quotes – USPS Edition Plugin <= 1.3.9 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in enituretechnology Small Package Quotes – USPS Edition small-package-quotes-usps-edition allows Object Injection.This issue affects Small Package Quotes – USPS Edition: from n/a through <= 1.3.9.
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High 8.2
Dataease DB2 Aspectweaver Deserialization Arbitrary File Write Vulnerability
DataEase is an open source business intelligence and data visualization tool. Prior to version 2.10.12, because DB2 parameters are not filtered, a JNDI injection attack can be directly launched. JNDI triggers an AspectJWeaver deserialization attack, writing t…
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High 8.6CVE-2025-43960 Public exploit
Adminer PHP Object Injection issue leads to Denial of Service
Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending …
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Critical 9.8
Mahara 21.10 before 21.10.6, 22.04 before 22.04.4, and 22.10 before 22.10.1 deserializes user input unsafely during ski…
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High 8.8
OperaMasks SDK ELite Script Engine v0.5.0 was discovered to contain a deserialization vulnerability.
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High 8.8
vLLM has remote code execution vulnerability in the tool call parser for Qwen3-Coder
### Summary An unsafe deserialization vulnerability allows any authenticated user to execute arbitrary code on the server if they are able to get the model to pass the code as an argument to a tool call. ### Details vLLM's [Qwen3 Coder tool parser](https://gi…
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High 8.7
CWE-502: Deserialization of Untrusted Data vulnerability exists that could cause remote code execution and compromise o…
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Critical 9.8
WordPress Cars4Rent Theme <= 1.4.2 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in axiomthemes Cars4Rent cars4rent allows Object Injection.This issue affects Cars4Rent: from n/a through <= 1.4.2.
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High 8.1
WordPress Simple Login Log plugin <= 1.1.3 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Max Chirkov Simple Login Log allows Object Injection. This issue affects Simple Login Log: from n/a through 1.1.3.
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Critical 9.8
WordPress Organic Beauty Theme <= 1.4.6 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in ThemeREX Organic Beauty organic-beauty allows Object Injection.This issue affects Organic Beauty: from n/a through <= 1.4.6.
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Critical 9.8
WordPress ThemeMakers Visual Content Composer Plugin <= 1.5.8 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in ThemeMakers ThemeMakers Visual Content Composer tmm_content_composer allows Object Injection.This issue affects ThemeMakers Visual Content Composer: from n/a through <= 1.5.8.
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High 8.8
WordPress Noisa theme <= 2.6.0 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in rascals Noisa noisa allows Object Injection.This issue affects Noisa: from n/a through <= 2.6.0.
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High 8.8
WordPress Post Grid and Gutenberg Blocks Plugin <= 2.3.11 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in PickPlugins Post Grid and Gutenberg Blocks post-grid allows Object Injection.This issue affects Post Grid and Gutenberg Blocks: from n/a through <= 2.3.11.
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High 7.2
WordPress Welcart e-Commerce Plugin <= 2.11.16 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in info@welcart Welcart e-Commerce usc-e-shop allows Object Injection.This issue affects Welcart e-Commerce: from n/a through <= 2.11.16.
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Critical 9.8
WordPress MediCenter - Health Medical Clinic <= 15.1 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in QuanticaLabs MediCenter - Health Medical Clinic medicenter allows Object Injection.This issue affects MediCenter - Health Medical Clinic: from n/a through <= 15.1.
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Medium 6.6
WordPress Groundhogg plugin <= 4.2.2 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in Adrian Tobey Groundhogg groundhogg allows Object Injection.This issue affects Groundhogg: from n/a through <= 4.2.2.
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High 7.5
Redirection for Contact Form 7 <= 3.2.4 - Unauthenticated PHP Object Injection via PHAR Deserialization
The Redirection for Contact Form 7 plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.2.4 via deserialization of untrusted input in the delete_associated_files function. This makes it possible for unauthenticate…
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High 8.8
Redirection for Contact Form 7 <= 3.2.4 - Unauthenticated PHP Object Injection
The Redirection for Contact Form 7 plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.2.4 via deserialization of untrusted input in the get_lead_fields function. This makes it possible for unauthenticated attack…
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Critical 9.4
Insecure Deserialization Vulnerability
Deserialization of Untrusted Data vulnerability in N-able N-central allows Local Execution of Code.This issue affects N-central: before 2025.3.1.
KEV Aug 13, 2025 -
Medium 6.3
jeecgboot JimuReport Data Large Screen Template testConnection deserialization
A vulnerability was determined in jeecgboot JimuReport up to 2.1.1. Affected by this issue is some unknown functionality of the file /drag/onlDragDataSource/testConnection of the component Data Large Screen Template. The manipulation leads to deserialization.…
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Critical 9.8
WordPress Exertio Theme <= 1.3.2 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in scriptsbundle Exertio exertio allows Object Injection.This issue affects Exertio: from n/a through <= 1.3.2.
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High 7.2
WordPress Content Egg plugin <= 7.0.0 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in keywordrush Content Egg content-egg allows Object Injection.This issue affects Content Egg: from n/a through <= 7.0.0.
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High 8.8
WordPress Eventin Plugin <= 4.0.31 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in Arraytics Eventin wp-event-solution allows Object Injection.This issue affects Eventin: from n/a through <= 4.0.31.
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High 7.8
NVIDIA NeMo Framework for all platforms contains a vulnerability where a user could cause a deserialization of untruste…
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Medium 4.8
Checkov by Prisma Cloud: Unsafe Deserialization of Terraform Files Allows Code Execution
An unsafe deserialization vulnerability in Palo Alto Networks Checkov by Prisma® Cloud allows an authenticated user to execute arbitrary code as a non administrative user by scanning a malicious terraform file when using Checkov in Prisma® Cloud. This issue i…
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Critical 10.0
Hyland OnBase < 17.0.2.87 .NET Remoting TCP Channel Unauthenticated RCE
Hyland OnBase versions prior to 17.0.2.87 (other versions may be affected) are vulnerable to unauthenticated remote code execution via insecure deserialization on the .NET Remoting TCP channel. The service registers a listener on port 6031 with the URI endpoi…
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Critical 9.8CVE-2025-7384 Public exploit
Database for Contact Form 7, WPforms, Elementor forms <= 1.4.3 - Unauthenticated PHP Object Injection to Arbitrary File Deletion
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, 1.4.3 via deserialization of untrusted input in the get_lead_detail function. This makes it possible for…
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High 8.8CVE-2025-49712 EPSS 21%
Microsoft SharePoint Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
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High 8.8
Web Deploy Remote Code Execution Vulnerability
Deserialization of untrusted data in Web Deploy allows an authorized attacker to execute code over a network.
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Critical 9.1
Kanboard Authenticated Admin Remote Code Execution via Unsafe Deserialization of Events
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.47, an unsafe deserialization vulnerability in the ProjectEventActvityFormatter allows admin users the ability to instantiate arbitrary php objects by modifyi…
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High 7.8
A vulnerability has been identified in SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 V17 (All versions < V17 Upd…