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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-68664 Detail

Description

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps() and dumpd() functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in versions 0.3.81 and 1.2.5.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8 GitHub, Inc.
https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6 GitHub, Inc.
https://github.com/langchain-ai/langchain/pull/34455 GitHub, Inc.
https://github.com/langchain-ai/langchain/pull/34458 GitHub, Inc.
https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81 GitHub, Inc.
https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5 GitHub, Inc.
https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-502 Deserialization of Untrusted Data GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-68664
NVD Published Date:
12/23/2025
NVD Last Modified:
12/23/2025
Source:
GitHub, Inc.