{"action":"Upgrade activestorage to 7.2.3.1 or later.","affected":[{"fixed":"8.1.2.1","introduced":"8.1.0.beta1"},{"fixed":"8.0.4.1","introduced":"8.0.0.beta1"},{"fixed":"7.2.3.1","introduced":"0"}],"component":"activestorage","cve_ids":["CVE-2026-33173"],"ecosystem":"RubyGems","epss":0.00397,"exploited":false,"fixed_versions":["8.1.2.1","8.0.4.1","7.2.3.1"],"ghsa_id":"GHSA-qcfx-2mfw-w4cg","id":"tcs_01M5KEMXRG94JCK2VB77QH0HH7","modified_at":"2026-09-10T03:50:40.554166531Z","published_at":"2026-03-23T20:54:16Z","references":["https://osv.dev/vulnerability/GHSA-qcfx-2mfw-w4cg","https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg","https://nvd.nist.gov/vuln/detail/CVE-2026-33173","https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53","https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e","https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0","https://github.com/rails/rails","https://github.com/rails/rails/releases/tag/v7.2.3.1","https://github.com/rails/rails/releases/tag/v8.0.4.1","https://github.com/rails/rails/releases/tag/v8.1.2.1","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33173.yml"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-qcfx-2mfw-w4cg","url":"https://osv.dev/vulnerability/GHSA-qcfx-2mfw-w4cg"}],"summary":"Rails Active Storage has possible content type bypass via metadata in direct uploads"}