{"action":"Upgrade langgraph-api to 0.10.0 or later.","affected":[{"fixed":"0.10.0","introduced":"0"}],"component":"langgraph-api","cve_ids":["CVE-2026-55235"],"ecosystem":"PyPI","epss":0.00365,"exploited":false,"fixed_versions":["0.10.0"],"ghsa_id":"GHSA-2c9q-c2q9-qgqv","id":"tcs_01M5KH86YQ6MQ4PY4E3708Y1QS","modified_at":"2026-09-10T12:15:09.104854079Z","published_at":"2026-09-10T09:44:51.587491Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3857","https://github.com/langchain-ai/helm/security/advisories/GHSA-2c9q-c2q9-qgqv","https://github.com/langchain-ai/helm","https://pypi.org/project/langgraph-api","https://github.com/advisories/GHSA-2c9q-c2q9-qgqv","https://nvd.nist.gov/vuln/detail/CVE-2026-55235"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"PYSEC-2026-3857","url":"https://osv.dev/vulnerability/PYSEC-2026-3857"}],"summary":"langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication"}