Langraph Checkpoint
Monthly
Unsafe deserialization in LangGraph SQLite Checkpoint's JsonPlusSerializer (versions 4.1.0 and prior) allows arbitrary Python object reconstruction from checkpoint payloads stored in a SQLite backing store, enabling code execution at checkpoint load time. Affected deployments are those where an unauthorized party can modify checkpoint bytes at rest - a high-privilege prerequisite (PR:H, AV:A per CVSS) that already implies a significant prior compromise. This is explicitly framed as a defense-in-depth concern: the issue escalates an existing 'checkpoint-store write access' incident into full application runtime code execution. No public exploit code or CISA KEV listing has been identified at time of analysis.
Unsafe deserialization in LangGraph SQLite Checkpoint's JsonPlusSerializer (versions 4.1.0 and prior) allows arbitrary Python object reconstruction from checkpoint payloads stored in a SQLite backing store, enabling code execution at checkpoint load time. Affected deployments are those where an unauthorized party can modify checkpoint bytes at rest - a high-privilege prerequisite (PR:H, AV:A per CVSS) that already implies a significant prior compromise. This is explicitly framed as a defense-in-depth concern: the issue escalates an existing 'checkpoint-store write access' incident into full application runtime code execution. No public exploit code or CISA KEV listing has been identified at time of analysis.