CVE-2026-28277: exploitation status and patch state
CVE-2026-28277 · CVSS 6.8 MEDIUM · EPSS 5%
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.
Is CVE-2026-28277 exploited?
Not in the CISA KEV catalog.
EPSS puts exploitation in the next 30 days at 5%.
Public exploit code: none found in monitored sources.