{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-68664", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-12-22T23:28:02.917Z", "datePublished": "2025-12-23T22:47:44.084Z", "dateUpdated": "2025-12-23T22:47:44.084Z"}, "containers": {"cna": {"title": "LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs", "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "lang": "en", "description": "CWE-502: Deserialization of Untrusted Data", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm"}, {"name": "https://github.com/langchain-ai/langchain/pull/34455", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/pull/34455"}, {"name": "https://github.com/langchain-ai/langchain/pull/34458", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/pull/34458"}, {"name": "https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8"}, {"name": "https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6"}, {"name": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81"}, {"name": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5"}], "affected": [{"vendor": "langchain-ai", "product": "langchain", "versions": [{"version": ">= 1.0.0, < 1.2.5", "status": "affected"}, {"version": "< 0.3.81", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-23T22:47:44.084Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-c67j-w6g6-q2cm", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2025-68664", "lastModified": "2025-12-23T23:15:44.933", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-12-23T23:15:44.933", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/pull/34455"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/pull/34458"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}