{"action":"Upgrade langgraph to 1.0.10 or later.","affected":[{"fixed":"1.0.10","introduced":"0"}],"component":"langgraph","cve_ids":["CVE-2026-28277"],"ecosystem":"PyPI","epss":0.0549,"exploited":false,"fixed_versions":["1.0.10"],"ghsa_id":"GHSA-g48c-2wqr-h844","id":"tcs_01M5KFGQCMJRYH3EKZCMN9EPGW","modified_at":"2026-06-06T01:00:08.116125988Z","published_at":"2026-03-05T20:19:49Z","references":["https://osv.dev/vulnerability/GHSA-g48c-2wqr-h844","https://github.com/langchain-ai/langgraph/security/advisories/GHSA-g48c-2wqr-h844","https://nvd.nist.gov/vuln/detail/CVE-2026-28277","https://github.com/langchain-ai/langgraph","https://github.com/pypa/advisory-database/tree/main/vulns/langgraph/PYSEC-2026-83.yaml"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"GHSA-g48c-2wqr-h844","url":"https://osv.dev/vulnerability/GHSA-g48c-2wqr-h844"}],"summary":"LangGraph checkpoint loading has unsafe msgpack deserialization"}