{"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_01M5KH6DSE0DEM0G6929083BGE","modified_at":"2026-08-07T09:45:09.966898625Z","published_at":"2026-06-30T22:16:57.837Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3625","https://github.com/msgpack/msgpack-python/security/advisories/GHSA-6v7p-g79w-8964","https://github.com/msgpack/msgpack-python/commit/2c56ddb5d0025ed481d962c0f5d62d19dec7476d"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-3625","url":"https://osv.dev/vulnerability/PYSEC-2026-3625"}],"summary":"MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. I"}