{"action":"Upgrade langgraph-checkpoint to 4.0.0 or later.","affected":[{"fixed":"4.0.0","introduced":"0"}],"component":"langgraph-checkpoint","cve_ids":["CVE-2026-27794"],"ecosystem":"PyPI","epss":0.00836,"exploited":false,"fixed_versions":["4.0.0"],"ghsa_id":"GHSA-mhr3-j7m5-c7c9","id":"tcs_01M5KFR64WRZZ4Z3HHP73FJ3P4","modified_at":"2026-07-13T16:43:21.192471528Z","published_at":"2026-02-25T22:59:12Z","references":["https://osv.dev/vulnerability/GHSA-mhr3-j7m5-c7c9","https://github.com/langchain-ai/langgraph/security/advisories/GHSA-mhr3-j7m5-c7c9","https://nvd.nist.gov/vuln/detail/CVE-2026-27794","https://github.com/langchain-ai/langgraph/pull/6677","https://github.com/langchain-ai/langgraph/commit/f91d79d0c86932ded6e3b9f195d5a0bbd5aef99c","https://github.com/langchain-ai/langgraph","https://github.com/langchain-ai/langgraph/releases/tag/checkpoint%3D%3D4.0.0"],"severity":{"label":"medium","score":6.6},"sources":[{"source":"osv","source_id":"GHSA-mhr3-j7m5-c7c9","url":"https://osv.dev/vulnerability/GHSA-mhr3-j7m5-c7c9"}],"summary":"LangGraph: BaseCache Deserialization of Untrusted Data may lead to Remote Code Execution"}