Vulnerability Description
LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 2.1.2 and below, the JsonPlusSerializer (used as the default serialization protocol for all checkpointing) contains a Remote Code Execution (RCE) vulnerability when deserializing payloads saved in the "json" serialization mode. By default, the serializer attempts to use "msgpack" for serialization. However, prior to version 3.0 of the checkpointer library, if illegal Unicode surrogate values caused serialization to fail, it would fall back to using the "json" mode. This issue is fixed in version 3.0.0.
Related Weaknesses (CWE)
References
- https://github.com/langchain-ai/langgraph/blob/c5744f583b11745cd406f3059903e17bb
- https://github.com/langchain-ai/langgraph/commit/c5744f583b11745cd406f3059903e17
- https://github.com/langchain-ai/langgraph/releases/tag/checkpoint%3D%3D3.0.0
- https://github.com/langchain-ai/langgraph/security/advisories/GHSA-wwqv-p2pp-99h
FAQ
What is CVE-2025-64439?
CVE-2025-64439 is a documented vulnerability. LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 2.1.2 and below, the JsonPlusSerializer (used as the...
How severe is CVE-2025-64439?
CVSS scoring is not yet available for CVE-2025-64439. Check NVD for updates.
Is there a patch for CVE-2025-64439?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.