{"id":"CVE-2026-115883","title":"LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores","summary":"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, …","severity":"medium","cvss":6,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-20","CWE-863"],"vendor":"langchain-ai","product":"langgraph","affected":["langgraph < 1.2.15","langgraph-checkpoint-postgres < 3.1.3","langgraph-checkpoint-sqlite < 3.1.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-26T15:39:07.446530Z"},"published":"2026-10-23","updated":"2026-10-26","sourceUpdated":"2026-10-26T17:42:32.027Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115883","references":[{"url":"https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67qq","label":"https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67qq"},{"url":"https://github.com/langchain-ai/langgraph/pull/9217","label":"https://github.com/langchain-ai/langgraph/pull/9217"},{"url":"https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e911b493ab1","label":"https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e911b493ab1"},{"url":"https://github.com/langchain-ai/langgraph/releases/tag/checkpointpostgres%3D%3D3.1.3"},{"url":"https://github.com/langchain-ai/langgraph/releases/tag/checkpointsqlite%3D%3D3.1.2"},{"url":"https://github.com/advisories/GHSA-6hmw-9432-67qq"},{"url":"https://github.com/langchain-ai/langgraph"}],"tags":["cve.org","ghsa","pip","osv"],"epss":0.00298,"epssPercentile":0.22378,"aliases":["GHSA-6hmw-9432-67qq"],"ecosystem":"pip","patched":["langgraph-checkpoint-postgres 3.1.3","langgraph-checkpoint-sqlite 3.1.2"],"ingestedAt":"2026-10-23T21:38:13.053Z","slug":"CVE-2026-115883","body":"## Overview\n\nLangGraph 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.\n\n## Affected\n\n- `langgraph < 1.2.15`\n- `langgraph-checkpoint-postgres < 3.1.3`\n- `langgraph-checkpoint-sqlite < 3.1.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-115883)\n\nAffected packages:\n\n- `langgraph-checkpoint-postgres < 3.1.3`\n- `langgraph-checkpoint-sqlite < 3.1.2`\n\nPatched in:\n\n- `langgraph-checkpoint-postgres 3.1.3`\n- `langgraph-checkpoint-sqlite 3.1.2`\n\nSource: https://github.com/advisories/GHSA-6hmw-9432-67qq","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":33,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}