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CVE-2025-64439

LangGraph Checkpoint affected by RCE in "json" mode of JsonPlusSerializer PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
langchain-ai / langgraphaffected < 3.0.0

CWE

CWE-502

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.