{"action":"Upgrade msgpack to 1.2.1 or later.","affected":[{"fixed":"1.2.1","introduced":"0"}],"component":"msgpack","cve_ids":["CVE-2026-57585"],"ecosystem":"PyPI","epss":0.00488,"exploited":false,"fixed_versions":["1.2.1"],"ghsa_id":"GHSA-6v7p-g79w-8964","id":"tcs_01M5KF469VX31S9V83CXF15JW0","modified_at":"2026-09-10T03:51:07.975753919Z","published_at":"2026-06-19T21:42:55Z","references":["https://osv.dev/vulnerability/GHSA-6v7p-g79w-8964","https://github.com/msgpack/msgpack-python/security/advisories/GHSA-6v7p-g79w-8964","https://github.com/msgpack/msgpack-python/commit/2c56ddb5d0025ed481d962c0f5d62d19dec7476d","https://github.com/msgpack/msgpack-python","https://github.com/msgpack/msgpack-python/releases/tag/v1.2.1"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-6v7p-g79w-8964","url":"https://osv.dev/vulnerability/GHSA-6v7p-g79w-8964"}],"summary":"MessagePack for Python: Out-of-bounds read / crash on Unpacker reuse after a caught error"}