Vulnerability Description
LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents. Prior to langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2, PostgresStore, AsyncPostgresStore, SqliteStore, and AsyncSqliteStore flatten namespace labels with ".".join(namespace), while BaseStore validates labels only for put and aput. Unvalidated dotted labels passed through get, search, delete, list_namespaces, their asynchronous equivalents, or direct batch and abatch operations can resolve to another tenant's stored namespace, allowing cross-namespace reads, overwrites, or deletion. InMemoryStore is not affected because it compares namespace tuples. This issue is fixed in langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2.
Related Weaknesses (CWE)
References
- https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e9
- https://github.com/langchain-ai/langgraph/pull/9217
- https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67q
FAQ
What is CVE-2026-115883?
CVE-2026-115883 is a documented vulnerability. LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents. Prior to langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2...
How severe is CVE-2026-115883?
CVSS scoring is not yet available for CVE-2026-115883. Check NVD for updates.
Is there a patch for CVE-2026-115883?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.