CVE-2025-68664

{"id": "CVE-2025-68664", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.3, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.7, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "published": "2025-12-23T23:15:44.933", "references": [{"url": "https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/pull/34455", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/pull/34458", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-502"}]}], "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."}], "lastModified": "2026-01-13T15:58:23.373", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:langchain:langchain_core:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "DC184324-6CF1-4F7A-B87F-6DD2120C3B3B", "versionEndExcluding": "0.3.81"}, {"criteria": "cpe:2.3:a:langchain:langchain_core:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "4298E953-ED96-49EC-8474-86095D560F2B", "versionEndExcluding": "1.2.5", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}