CVE-2026-106119

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...

EUVD-2026-93771

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...

CVE-2026-106119

The LangChain framework is vulnerable to a query injection flaw in the MongoDBChatMessageHistory component prior to version 1.3.1 . The root cause is a failure to enforce the documented string type for untrusted structured session identifiers at runtime, which allows these identifiers to be inter...

CVE-2026-106119 LangChain: MongoDBChatMessageHistory query injection can allow cross-session access

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...