{"action":"Upgrade rack to 3.1.21 or later.","affected":[{"fixed":"3.1.21","introduced":"3.0.0.beta1"},{"fixed":"3.2.6","introduced":"3.2.0"}],"component":"rack","cve_ids":["CVE-2026-32762"],"ecosystem":"RubyGems","epss":0.00179,"exploited":false,"fixed_versions":["3.1.21","3.2.6"],"ghsa_id":"GHSA-qfgr-crr9-7r49","id":"tcs_01M5KEMYFN5ZRMPE721WE1WJ0P","modified_at":"2026-09-10T03:51:02.890606631Z","published_at":"2026-04-02T20:31:52Z","references":["https://osv.dev/vulnerability/GHSA-qfgr-crr9-7r49","https://github.com/rack/rack/security/advisories/GHSA-qfgr-crr9-7r49","https://nvd.nist.gov/vuln/detail/CVE-2026-32762","https://github.com/rack/rack","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-32762.yml"],"severity":{"label":"medium","score":4.8},"sources":[{"source":"osv","source_id":"GHSA-qfgr-crr9-7r49","url":"https://osv.dev/vulnerability/GHSA-qfgr-crr9-7r49"}],"summary":"Rack: Forwarded Header semicolon injection enables Host and Scheme spoofing"}