CVE-2026-115883

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e911b493ab1
https://github.com/langchain-ai/langgraph/pull/9217
https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67qq

Configurations

No configuration.

History

23 Oct 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-23 22:16

Updated : 2026-10-26 18:34

NVD link : CVE-2026-115883

Mitre link : CVE-2026-115883

CVE.ORG link : CVE-2026-115883

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-863

Incorrect Authorization

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