Search criteria

3 vulnerabilities found for langchain\/core by langchain

FKIE_CVE-2025-68665

Vulnerability from fkie_nvd - Published: 2025-12-23 23:15 - Updated: 2026-01-13 16:17
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() method (and subsequently when string-ifying objects using JSON.stringify(). The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. 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 @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3
References
security-advisories@github.comhttps://github.com/langchain-ai/langchainjs/commit/e5063f9c6e9989ea067dfdff39262b9e7b6aba62Patch
security-advisories@github.comhttps://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcore%401.1.8Release Notes
security-advisories@github.comhttps://github.com/langchain-ai/langchainjs/releases/tag/langchain%401.2.3Release Notes
security-advisories@github.comhttps://github.com/langchain-ai/langchainjs/security/advisories/GHSA-r399-636x-v7f6Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-r399-636x-v7f6Vendor Advisory
Impacted products
Vendor Product Version
langchain langchain.js *
langchain langchain.js *
langchain langchain\/core *
langchain langchain\/core *
To clipboard 

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CVE-2025-68665 (GCVE-0-2025-68665)

Vulnerability from nvd – Published: 2025-12-23 22:56 – Updated: 2025-12-24 14:38
VLAI?
Title
LangChain serialization injection vulnerability enables secret extraction
Summary
LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() method (and subsequently when string-ifying objects using JSON.stringify(). The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. 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 @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
langchain-ai langchainjs Affected: @langchain/core >= 1.0.0, < 1.1.8
Affected: @langchain/core < 0.3.80
Affected: langchain >= 1.0.0, < 1.2.3
Affected: langchain < 0.3.37
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-68665 (GCVE-0-2025-68665)

Vulnerability from cvelistv5 – Published: 2025-12-23 22:56 – Updated: 2025-12-24 14:38
VLAI?
Title
LangChain serialization injection vulnerability enables secret extraction
Summary
LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() method (and subsequently when string-ifying objects using JSON.stringify(). The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. 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 @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
langchain-ai langchainjs Affected: @langchain/core >= 1.0.0, < 1.1.8
Affected: @langchain/core < 0.3.80
Affected: langchain >= 1.0.0, < 1.2.3
Affected: langchain < 0.3.37
Create a notification for this product.
Show details on NVD website
To clipboard 

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