GHSA-M6RX-H84Q-8R95 LangChain: MongoDBChatMessageHistory query injection can allow cross-session access

Impact MongoDBChatMessageHistory did not enforce the documented string type for session identifiers at runtime. In affected applications, a structured session identifier could be interpreted as a MongoDB query condition rather than as a literal identifier. Applications are affected when they pass...

EUVD-2026-93771

LangChain: MongoDBChatMessageHistory query injection can allow cross-session access...

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...

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...

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...

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...

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: Improper Neutralization of Special Elements in Data Query Logic

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...

PT-2026-106840

Name of the Vulnerable Software and Affected Versions LangChain versions prior to 1.3.1 Description In the MongoDBChatMessageHistory component, the system fails to enforce the required string type for untrusted structured session identifiers at runtime. This allows a session identifier to be...