CVE-2025-68665

{"id": "CVE-2025-68665", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68665", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2025-12-24T14:38:36.252592Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "langchain-ai", "product": "langchainjs", "versions": [{"status": "affected", "version": "@langchain/core >= 1.0.0, < 1.1.8"}, {"status": "affected", "version": "@langchain/core < 0.3.80"}, {"status": "affected", "version": "langchain >= 1.0.0, < 1.2.3"}, {"status": "affected", "version": "langchain < 0.3.37"}]}]}], "published": "2025-12-23T23:15:45.097", "references": [{"url": "https://github.com/langchain-ai/langchainjs/commit/e5063f9c6e9989ea067dfdff39262b9e7b6aba62", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcore%401.1.8", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchainjs/releases/tag/langchain%401.2.3", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-r399-636x-v7f6", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-r399-636x-v7f6", "tags": ["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 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"}, {"lang": "es", "value": "LangChain es un framework para crear aplicaciones impulsadas por LLM. Versiones anteriores a @langchain/core 0.3.80 y 1.1.8, y versiones anteriores a langchain 0.3.37 y 1.2.3, existe una vulnerabilidad de inyecci\u00f3n de serializaci\u00f3n en el m\u00e9todo toJSON() de LangChain JS (y posteriormente al convertir objetos a cadena usando JSON.stringify()). El m\u00e9todo no escapaba los objetos con claves \u2019lc\u2019 al serializar datos de formato libre en kwargs. La clave \u2019lc\u2019 se usa internamente en LangChain para marcar objetos serializados. Cuando datos controlados por el usuario contienen esta estructura de clave, se trata como un objeto leg\u00edtimo de LangChain durante la deserializaci\u00f3n en lugar de datos de usuario simples. Este problema se ha corregido en las versiones @langchain/core 0.3.80 y 1.1.8, y langchain 0.3.37 y 1.2.3."}], "lastModified": "2026-10-19T22:10:00.130", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:langchain:langchain.js:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79F6F9C9-7927-4C72-9F8F-63186F6D59A2", "versionEndExcluding": "0.3.37"}, {"criteria": "cpe:2.3:a:langchain:langchain.js:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32341D52-B3FD-484F-940F-CB8EB24CFB43", "versionEndExcluding": "1.2.3", "versionStartIncluding": "1.0.0"}, {"criteria": "cpe:2.3:a:langchain:langchain\\/core:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "7D44DA1A-0433-4A46-8E85-D8363F1E5C99", "versionEndExcluding": "0.3.80"}, {"criteria": "cpe:2.3:a:langchain:langchain\\/core:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "CECC1942-DCA4-42B5-B9C1-E2F420B27D9A", "versionEndExcluding": "1.1.8", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}