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3 vulnerabilities found for langchain_core by langchain

CVE-2025-68664 (GCVE-0-2025-68664)

Vulnerability from nvd – Published: 2025-12-23 22:47 – Updated: 2025-12-24 14:40
VLAI?
Title
LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs
Summary
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.
Severity ?
9.3 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
langchain-ai langchain Affected: >= 1.0.0, < 1.2.5
Affected: < 0.3.81
Create a notification for this product.
Show details on NVD website
To clipboard 

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FKIE_CVE-2025-68664

Vulnerability from fkie_nvd - Published: 2025-12-23 23:15 - Updated: 2026-01-13 15:58
Severity ?
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8Patch
security-advisories@github.comhttps://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6Patch
security-advisories@github.comhttps://github.com/langchain-ai/langchain/pull/34455Issue Tracking, Patch
security-advisories@github.comhttps://github.com/langchain-ai/langchain/pull/34458Issue Tracking, Patch
security-advisories@github.comhttps://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81Release Notes
security-advisories@github.comhttps://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5Release Notes
security-advisories@github.comhttps://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cmExploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cmExploit, Vendor Advisory
Impacted products
Vendor Product Version
langchain langchain_core *
langchain langchain_core *
To clipboard 

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CVE-2025-68664 (GCVE-0-2025-68664)

Vulnerability from cvelistv5 – Published: 2025-12-23 22:47 – Updated: 2025-12-24 14:40
VLAI?
Title
LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs
Summary
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.
Severity ?
9.3 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
langchain-ai langchain Affected: >= 1.0.0, < 1.2.5
Affected: < 0.3.81
Create a notification for this product.
Show details on NVD website
To clipboard 

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