CVE-2026-28277
Description
LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can modify checkpoint data in the backing store (for example, after a database compromise or other privileged write access to the persistence layer), they can potentially supply a crafted payload that triggers unsafe object reconstruction when the checkpoint is loaded. No known patch is public.
How to fix
- langgraph1.0.10, 1.0.10rc1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| langchain langgraph | v ≤ 1.0.9 | — |
| langgraphPyPI | v < 1.0.10, v < 1.0.10rc1 | 1.0.10, 1.0.10rc1 |
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