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 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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/langchain-ai/langchainjs/commit/946e3d856ff1f8ce7f7b9374c83f680a6ada79af
https://github.com/langchain-ai/langchainjs/pull/11672
https://github.com/langchain-ai/langchainjs/releases/tag/@langchain/mongodb@1.3.1
https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-m6rx-h84q-8r95

Configurations

No configuration.

History

06 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 19:17

Updated : 2026-10-06 20:17

NVD link : CVE-2026-106119

Mitre link : CVE-2026-106119

CVE.ORG link : CVE-2026-106119

JSON object : View

Products Affected

No product.

CWE

CWE-943

Improper Neutralization of Special Elements in Data Query Logic

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