CVE Watch6 oct 2026

CVE-2026-106119

LangChain is a framework for building LLM-powered applications. Prior to 1.3.1, MongoDBChatMessageHistory does not enforce the documented st

CVSS

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Sin CVSS

EPSS

0.5%

p39

KEV

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Exploit Today

0-100

Publicado: 6 oct 2026 · Última mod.: 6 oct 2026 · CWE-943

EPSS · 30d

0.5%EPSS · 30 días0.5%

2026-10-072026-10-20

Descripción técnica

LangChain is a framework for building LLM-powered applications. Prior to 1.3.1, MongoDBChatMessageHistory does not enforce the documented string type for an untrusted structured session identifier at runtime, allowing the identifier to be interpreted as a MongoDB query condition rather than as a literal value when multiple users' histories are stored in a shared MongoDB collection. An attacker able to invoke chat-history operations can read, modify, or delete another user's stored conversation. Applications using authenticated, server-controlled string identifiers are not affected. This issue is fixed in version 1.3.1.

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