{"id":"CVE-2026-33168","aliases":["GHSA-v55j-83pf-r9cq"],"url":"https://o3.security/vulnerability/CVE-2026-33168","summary":"Rails has a possible XSS vulnerability in its Action View tag helpers","details":"Action View provides conventions and helpers for building web pages with the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when a blank string is used as an HTML attribute name in Action View tag helpers, the attribute escaping is bypassed, producing malformed HTML. A carefully crafted attribute value could then be misinterpreted by the browser as a separate attribute name, possibly leading to XSS. Applications that allow users to specify custom HTML attributes are affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.","published":"2026-03-23T23:01:22.019Z","modified":"2026-08-07T11:49:52.503964015Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"actionview","fixedVersion":"8.1.2.1"},{"ecosystem":"RubyGems","name":"actionview","fixedVersion":"8.0.4.1"},{"ecosystem":"RubyGems","name":"actionview","fixedVersion":"7.2.3.1"}],"fix":{"url":"https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c","label":"rails/rails@0b6f800"},"references":[{"type":"WEB","url":"https://github.com/rails/rails/releases/tag/v7.2.3.1"},{"type":"WEB","url":"https://github.com/rails/rails/releases/tag/v8.0.4.1"},{"type":"WEB","url":"https://github.com/rails/rails/releases/tag/v8.1.2.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33168.json"},{"type":"ADVISORY","url":"https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33168"},{"type":"FIX","url":"https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c"},{"type":"FIX","url":"https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42d"},{"type":"FIX","url":"https://github.com/rails/rails/commit/c79a07df1e88738df8f68cb0ee759ad6128ca924"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:52.503964015Z"}}