{
    "id": "CVE-2025-68664",
    "published": "2025-12-23 23:15:44",
    "last_modified": "2026-06-17 09:59:23",
    "cvss_score": "9.3",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
    "cwe": "CWE-502",
    "description": "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.",
    "epss_score": "0.42930",
    "epss_percentile": "0.98677",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:40:18",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "langchain",
            "product": "langchain_core"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "52514",
            "title": "LangChain Core 1.2.4 - SSTI/RCE",
            "date": "2026-04-29",
            "url": "https://www.exploit-db.com/exploits/52514"
        }
    ],
    "refs_list": [
        "https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8",
        "https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6",
        "https://github.com/langchain-ai/langchain/pull/34455",
        "https://github.com/langchain-ai/langchain/pull/34458",
        "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81",
        "https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5",
        "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm",
        "https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm"
    ]
}