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6.0 Medium

CVE-2026-115883 LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents

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.

Affected products and versions

Product Affected versions Fixed in
langgraph 1.2 earliest → < 1.2.15 1.2.15
langgraph-checkpoint-postgres 3.1 earliest → < 3.1.3 3.1.3
langgraph-checkpoint-sqlite 3.1 earliest → < 3.1.2 3.1.2

References

Timeline

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Other CVEs of langgraph

The 11 CVEs of langgraph →
CVE-2026-118667 LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs… 4.3 Medium CVE-2026-115885 The LangGraph CLI is the official command-line interface for LangGraph 4.1 Medium CVE-2026-104873 LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs… 7.6 High CVE-2026-71433 LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's… 5.3 Medium
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