{"cve":"CVE-2026-115883","nvd":{"published":"2026-10-23T22:16:57.820","modified":"2026-10-23T22:16:57.820","status":"Received","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.","cvss_v4":{"vector":"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","score":6.0},"cvss_v3":null,"cwes":["CWE-20","CWE-863"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-115883","score":0.00298,"percentile":0.22303,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-6hmw-9432-67qq","url":"https://osv.dev/vulnerability/GHSA-6hmw-9432-67qq","summary":"LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores","modified":"2026-10-23T22:15:03.645110544Z","packages":[{"ecosystem":"PyPI","name":"langgraph-checkpoint-postgres","purl":"pkg:pypi/langgraph-checkpoint-postgres","ranges":["<3.1.3"],"fixed":["3.1.3"]},{"ecosystem":"PyPI","name":"langgraph-checkpoint-sqlite","purl":"pkg:pypi/langgraph-checkpoint-sqlite","ranges":["<3.1.2"],"fixed":["3.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}