9.3

CVE-2025-68664

Medienbericht
Exploit

LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LangchainLangchain Core SwPlatformpython Version < 0.3.81
LangchainLangchain Core SwPlatformpython Version >= 1.0.0 < 1.2.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 13.83% 0.96
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
security-advisories@github.com 9.3 3.9 4.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE-502 Deserialization of Untrusted Data

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

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VulnDex Intel
Media Report
10.04.2026 15:18
https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm
Vendor Advisory
Exploit
https://github.com/langchain-ai/langchain/pull/34455
Patch
Issue Tracking
https://github.com/langchain-ai/langchain/pull/34458
Patch
Issue Tracking
https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8
Patch
https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6
Patch
https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81
Release Notes
https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5
Release Notes