{"action":"Upgrade rack to 2.2.20 or later.","affected":[{"fixed":"2.2.20","introduced":"0"},{"fixed":"3.1.18","introduced":"3.0"},{"fixed":"3.2.3","introduced":"3.2"}],"component":"rack","cve_ids":["CVE-2025-61919"],"ecosystem":"RubyGems","epss":0.00648,"exploited":false,"fixed_versions":["2.2.20","3.1.18","3.2.3"],"ghsa_id":"GHSA-6xw4-3v39-52mm","id":"tcs_01M5KEHEYWXZG77P9ZYMWCZXX0","modified_at":"2026-09-10T03:50:29.392401482Z","published_at":"2025-10-10T17:33:35Z","references":["https://osv.dev/vulnerability/GHSA-6xw4-3v39-52mm","https://github.com/rack/rack/security/advisories/GHSA-6xw4-3v39-52mm","https://nvd.nist.gov/vuln/detail/CVE-2025-61919","https://github.com/rack/rack/commit/4e2c903991a790ee211a3021808ff4fd6fe82881","https://github.com/rack/rack/commit/cbd541e8a3d0c5830a3c9a30d3718ce2e124f9db","https://github.com/rack/rack/commit/e179614c4a653283286f5f046428cbb85f21146f","https://github.com/rack/rack","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2025-61919.yml"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-6xw4-3v39-52mm","url":"https://osv.dev/vulnerability/GHSA-6xw4-3v39-52mm"}],"summary":"Rack is vulnerable to a memory-exhaustion DoS through unbounded URL-encoded body parsing"}