7.4
High
CVE-2025-64439 LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| langgraph 3.0 | earliest → < 3.0.0 | 3.0.0 |
Other CVEs of langgraph
The 11 CVEs of langgraph →
CVE-2026-118667
LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs…
4.3
Medium
CVE-2026-115885
The LangGraph CLI is the official command-line interface for LangGraph
4.1
Medium
CVE-2026-115883
LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents
6.0
Medium
CVE-2026-104873
LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs…
7.6
High