Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

2667 vulnerabilities reference this CWE, most recent first.

CVE-2026-25029 (GCVE-0-2026-25029)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress KIDZ theme <= 5.24 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in park_of_ideas KIDZ kidz allows Object Injection.This issue affects KIDZ: from n/a through <= 5.24.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:47 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
park_of_ideas KIDZ Affected: 0 , ≤ 5.24 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24989 (GCVE-0-2026-24989)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress SUMO Affiliates Pro plugin < 11.4.0 - PHP Object Injection vulnerability
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:37 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
FantasticPlugins SUMO Affiliates Pro Affected: 0 , ≤ 11.4.0 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
Phat RiO | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24981 (GCVE-0-2026-24981)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress Visionary Core plugin <= 1.4.9 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in NooTheme Visionary Core noo-visionary-core allows Object Injection.This issue affects Visionary Core: from n/a through <= 1.4.9.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:49 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
NooTheme Visionary Core Affected: 0 , ≤ 1.4.9 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24978 (GCVE-0-2026-24978)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress Jobica Core plugin <= 1.4.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in NooTheme Jobica Core jobica-core allows Object Injection.This issue affects Jobica Core: from n/a through <= 1.4.1.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
NooTheme Jobica Core Affected: 0 , ≤ 1.4.1 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24976 (GCVE-0-2026-24976)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress Organici Library plugin <= 2.1.2 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in NooTheme Organici Library noo-organici-library allows Object Injection.This issue affects Organici Library: from n/a through <= 2.1.2.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
NooTheme Organici Library Affected: 0 , ≤ 2.1.2 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24974 (GCVE-0-2026-24974)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress CitiLights theme <= 3.7.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in NooTheme CitiLights noo-citilights allows Object Injection.This issue affects CitiLights: from n/a through <= 3.7.1.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
NooTheme CitiLights Affected: 0 , ≤ 3.7.1 (custom)
Create a notification for this product.
Date Public
2026-04-22 14:18
Credits
Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24954 (GCVE-0-2026-24954)

Vulnerability from cvelistv5 – Published: 2026-02-03 14:08 – Updated: 2026-04-28 16:14
VLAI
Title
WordPress WpEvently plugin <= 5.0.8 - Deserialization of untrusted data vulnerability
Summary
Deserialization of Untrusted Data vulnerability in magepeopleteam WpEvently mage-eventpress allows Object Injection.This issue affects WpEvently: from n/a through <= 5.0.8.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 18:31 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
magepeopleteam WpEvently Affected: 0 , ≤ 5.0.8 (custom)
Create a notification for this product.
Date Public
2026-04-01 16:04
Credits
Phat RiO | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-24892 (GCVE-0-2026-24892)

Vulnerability from cvelistv5 – Published: 2026-02-20 20:55 – Updated: 2026-02-25 21:33
VLAI
Title
openITCOCKPIT has Unsafe Deserialization in openITCOCKPIT Changelog Handling
Summary
openITCOCKPIT is an open source monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus. openITCOCKPIT Community Edition 5.3.1 and earlier contains an unsafe PHP deserialization pattern in the processing of changelog entries. Serialized changelog data derived from attacker-influenced application state is unserialized without restricting allowed classes. Although no current application endpoint was found to introduce PHP objects into this data path, the presence of an unrestricted unserialize() call constitutes a latent PHP object injection vulnerability. If future code changes, plugins, or refactors introduce object values into this path, the vulnerability could become immediately exploitable with severe impact, including potential remote code execution.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-25 21:33 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-24891 (GCVE-0-2026-24891)

Vulnerability from cvelistv5 – Published: 2026-02-20 17:23 – Updated: 2026-02-20 18:42
VLAI
Title
openITCOCKPIT has Unsafe PHP Deserialization in Gearman Worker Allowing Conditional Object Injection
Summary
openITCOCKPIT is an open source monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus. Versions 5.3.1 and below contain an unsafe deserialization sink in the Gearman worker implementation. The worker function registered as oitc_gearman calls PHP's unserialize() on job payloads without enforcing class restrictions or validating data origin. While the intended deployment assumes only trusted internal components enqueue Gearman jobs, this trust boundary is not enforced in application code. In environments where the Gearman service or worker is exposed to untrusted systems, an attacker may submit crafted serialized payloads to trigger PHP Object Injection in the worker process. This vulnerability is exploitable when Gearman listens on non-local interfaces, network access to TCP/4730 is unrestricted, or untrusted systems can enqueue jobs. Default, correctly hardened deployments may not be immediately exploitable, but the unsafe sink remains present in code regardless of deployment configuration. Enforcing this trust boundary in code would significantly reduce risk and prevent exploitation in misconfigured environments. This issue has been fixed in version 5.4.0.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-20 18:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-24815 (GCVE-0-2026-24815)

Vulnerability from cvelistv5 – Published: 2026-01-27 08:51 – Updated: 2026-01-27 20:41
VLAI
Title
A XStream Security Vulnerability in XML Deserialization in datavane/tis
Summary
Unrestricted Upload of File with Dangerous Type, Deserialization of Untrusted Data vulnerability in datavane tis (tis-plugin/src/main/java/com/qlangtech/tis/extension/impl modules). This vulnerability is associated with program files XmlFile.Java. This issue affects tis: before v4.3.0.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:P/AU:Y/R:U/V:C/RE:M/U:Red
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 20:41 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
datavane tis Affected: 0 , < v4.3.0 (git)
Create a notification for this product.
Credits
TITAN Team (titancaproject@gmail.com)
Show details on NVD website
To clipboard 

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Mitigation
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.

Mitigation
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.

Mitigation
Implementation

Explicitly define a final object() to prevent deserialization.

Mitigation
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.
Mitigation
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.

Mitigation
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.

Mitigation MIT-29
Operation

Strategy: Firewall

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].

CAPEC-586: Object Injection

An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.

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