{"action":"Upgrade rack to 2.2.19 or later.","affected":[{"fixed":"2.2.19","introduced":"0"},{"fixed":"3.1.17","introduced":"3.1"},{"fixed":"3.2.2","introduced":"3.2"}],"component":"rack","cve_ids":["CVE-2025-61771"],"ecosystem":"RubyGems","epss":0.00561,"exploited":false,"fixed_versions":["2.2.19","3.1.17","3.2.2"],"ghsa_id":"GHSA-w9pc-fmgc-vxvw","id":"tcs_01M5KENWBJW7ZYH7T3W8P4SWDV","modified_at":"2026-09-10T03:50:30.326446730Z","published_at":"2025-10-07T17:27:07Z","references":["https://osv.dev/vulnerability/GHSA-w9pc-fmgc-vxvw","https://github.com/rack/rack/security/advisories/GHSA-w9pc-fmgc-vxvw","https://nvd.nist.gov/vuln/detail/CVE-2025-61771","https://github.com/rack/rack/commit/589127f4ac8b5cf11cf88fb0cd116ffed4d2181e","https://github.com/rack/rack/commit/d869fed663b113b95a74ad53e1b5cae6ab31f29e","https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd","https://github.com/rack/rack","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2025-61771.yml"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-w9pc-fmgc-vxvw","url":"https://osv.dev/vulnerability/GHSA-w9pc-fmgc-vxvw"}],"summary":"Rack: Multipart parser buffers large non‑file fields entirely in memory, enabling DoS (memory exhaustion)"}