Python
CVE-2026-28277
MEDIUM
GHSA-g48c-2wqr-h844
Severity by source
AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Blast Radius
ecosystem impact- 74 pypi packages depend on langgraph (20 direct, 55 indirect)
Ecosystem-wide dependent count for version 1.0.10.
DescriptionGitHub Advisory
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.
AnalysisAI
LangGraph SQLite Checkpoint versions 1.0.9 and prior are vulnerable to unsafe deserialization of msgpack-encoded objects, allowing attackers with write access to the checkpoint database to execute arbitrary code when checkpoints are loaded. This vulnerability affects Python-based AI/ML applications using LangGraph's persistence layer and requires adversary control of the backing storage to exploit. No public patch is currently available for this issue.
Technical ContextAI
Classified as CWE-502 (Deserialization of Untrusted Data). 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 tri
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today