CVE-2026-28277 (GCVE-0-2026-28277)

Vulnerability from cvelistv5 – Published: 2026-03-05 19:10 – Updated: 2026-03-06 18:04
VLAI
Title
LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading
Summary
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.
Severity
6.8 (Medium)
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-06 18:04 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7886 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
langchain-ai langgraph Affected: <= 1.0.9
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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