6.0
Medium
CVE-2026-106119 LangChain is a framework for building LLM-powered applications
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| langchainjs 1.5 | earliest → < 1.5.14 | 1.5.14 |
| mongodb 1.3 | earliest → < 1.3.1 | 1.3.1 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of langchainjs
The 6 CVEs of langchainjs →
CVE-2026-105799
LangChain is a framework for building LLM-powered applications
2.3
Low
CVE-2026-27795
LangChain is a framework for building LLM-powered applications
4.1
Medium
CVE-2026-26019
LangChain is a framework for building LLM-powered applications
4.1
Medium
CVE-2025-68665
LangChain is a framework for building LLM-powered applications
8.6
High