[ CVE-2026-115883 · Published 23 Oct 2026 ]
LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores
[ Description ]Official 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.
[ Fixes ]Fixes and patches
- langgraph-checkpoint-postgres 3.1.3Fixed version · GitHub Advisories · pip package langgraph-checkpoint-postgres: upgrade to 3.1.3 or later (affected < 3.1.3)
- langgraph-checkpoint-sqlite 3.1.2Fixed version · GitHub Advisories · pip package langgraph-checkpoint-sqlite: upgrade to 3.1.2 or later (affected < 3.1.2)
[ Packages ]Affected open-source packages
- langgraph-checkpoint-postgres pipAffected < 3.1.3 · fixed in 3.1.3 · GHSA-6hmw-9432-67qq
- langgraph-checkpoint-sqlite pipAffected < 3.1.2 · fixed in 3.1.2 · GHSA-6hmw-9432-67qq