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.

4801 vulnerabilities reference this CWE, most recent first.

CVE-2026-0859 (GCVE-0-2026-0859)

Vulnerability from cvelistv5 – Published: 2026-01-13 11:54 – Updated: 2026-01-13 14:12
VLAI
Title
TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool
Summary
TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
Severity
5.2 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
TYPO3 TYPO3 CMS Affected: 10.0.0 , < 10.4.55 (semver)
Affected: 11.0.0 , < 11.5.49 (semver)
Affected: 12.0.0 , < 12.4.41 (semver)
Affected: 13.0.0 , < 13.4.23 (semver)
Affected: 14.0.0 , < 14.0.2 (semver)
Create a notification for this product.
Credits
Vitaly Simonovich Elias Häußler Oliver Hader
Show details on NVD website
To clipboard 

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CVE-2026-0773 (GCVE-0-2026-0773)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:29 – Updated: 2026-01-23 16:26
VLAI
Title
Upsonic Cloudpickle Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
Upsonic Cloudpickle Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Upsonic. Authentication is not required to exploit this vulnerability. The specific flaw exists within the add_tool endpoint, which listens on TCP port 7541 by default. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26845.
Severity
9.8 (Critical)
CVSS:3.0/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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Vendor Product Version
Upsonic Upsonic Affected: 0.52.1
Create a notification for this product.
Date Public
2026-01-09 17:13
Show details on NVD website
To clipboard 

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CVE-2026-0772 (GCVE-0-2026-0772)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:29 – Updated: 2026-02-26 14:44
VLAI
Title
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is required to exploit this vulnerability. The specific flaw exists within the disk cache service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27919.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Vendor Product Version
Langflow Langflow Affected: 1.5.0.post2
Create a notification for this product.
Date Public
2026-01-09 16:39
Show details on NVD website
To clipboard 

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CVE-2026-0764 (GCVE-0-2026-0764)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:28 – Updated: 2026-01-23 19:20
VLAI
Title
GPT Academic upload Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
GPT Academic upload Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GPT Academic. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upload endpoint. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27957.
Severity
9.8 (Critical)
CVSS:3.0/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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Date Public
2026-01-09 16:35
Show details on NVD website
To clipboard 

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CVE-2026-0763 (GCVE-0-2026-0763)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:28 – Updated: 2026-01-23 19:21
VLAI
Title
GPT Academic run_in_subprocess_wrapper_func Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
GPT Academic run_in_subprocess_wrapper_func Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GPT Academic. Authentication is not required to exploit this vulnerability. The specific flaw exists within the run_in_subprocess_wrapper_func function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27958.
Severity
9.8 (Critical)
CVSS:3.0/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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Date Public
2026-01-09 16:35
Show details on NVD website
To clipboard 

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CVE-2026-0762 (GCVE-0-2026-0762)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:28 – Updated: 2026-01-23 19:23
VLAI
Title
GPT Academic stream_daas Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
GPT Academic stream_daas Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GPT Academic. Interaction with a malicious DAAS server is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the stream_daas function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27956.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Date Public
2026-01-09 16:35
Show details on NVD website
To clipboard 

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CVE-2026-0760 (GCVE-0-2026-0760)

Vulnerability from cvelistv5 – Published: 2026-01-23 03:28 – Updated: 2026-01-23 19:25
VLAI
Title
Foundation Agents MetaGPT deserialize_message Deserialization of Untrusted Data Remote Code Execution Vulnerability
Summary
Foundation Agents MetaGPT deserialize_message Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foundation Agents MetaGPT. Authentication is not required to exploit this vulnerability. The specific flaw exists within the deserialize_message function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-28121.
Severity
9.8 (Critical)
CVSS:3.0/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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Date Public
2026-01-09 16:31
Show details on NVD website
To clipboard 

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CVE-2026-0726 (GCVE-0-2026-0726)

Vulnerability from cvelistv5 – Published: 2026-01-20 14:26 – Updated: 2026-04-14 15:07
VLAI
Title
Nexter Extension – Site Enhancements Toolkit <= 4.4.6 - Unauthenticated PHP Object Injection via 'nxt_unserialize_replace'
Summary
The Nexter Extension – Site Enhancements Toolkit plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.4.6 via deserialization of untrusted input in the 'nxt_unserialize_replace' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Craig Smith
Show details on NVD website
To clipboard 

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CVE-2026-0677 (GCVE-0-2026-0677)

Vulnerability from cvelistv5 – Published: 2026-03-20 09:31 – Updated: 2026-06-10 19:23
VLAI
Title
WordPress TotalContest Lite plugin <= 2.9.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in TotalSuite TotalContest Lite totalcontest-lite allows Object Injection.This issue affects TotalContest Lite: from n/a through <= 2.9.1.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
TotalSuite TotalContest Lite Affected: 0 , ≤ 2.9.1 (custom)
Create a notification for this product.
Date Public
2026-04-01 16:44
Credits
hhhai | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2025-71378 (GCVE-0-2025-71378)

Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-23 02:46
VLAI
Title
picklescan - Remote Code Execution via Undetected cProfile.runctx in Pickle Files
Summary
picklescan before 0.0.30 fails to detect cProfile.runctx function calls in pickle file reduce methods, allowing attackers to execute arbitrary code. Malicious pickle files bypass picklescan detection and execute remote code when loaded via pickle.load().
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.30 (semver)
Unaffected: 0.0.30 (semver)
Create a notification for this product.
Date Public
2025-08-26 00:00
Credits
FredericDT
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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