CVE-2025-64439

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.

Risk Information

Base Score

9.8

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS Score

Exploitation Probability

0.762

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2025-64439 are fixed in Python-langgraph-checkpoint 3.0.0	Windows
Vulnerabilities CVE-2025-64439 are fixed in Python-langgraph-checkpoint for linux 3.0.0	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234