{"id":"GHSA-53p3-c7vp-4mcc","revision":"3a3dae04f14241f496358f399459b35b","records":[{"revision":"3a3dae04f14241f496358f399459b35b","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-53p3-c7vp-4mcc","aliases":["CVE-2026-73427"],"title":"Trix is vulnerable to XSS through JSON deserialization bypass in drag-and-drop (Level0InputController)","description":"### Impact\n\nThe Trix editor, in versions prior to 2.1.18, is vulnerable to XSS when a crafted `application/x-trix-document` JSON payload is dropped into the editor in environments using the fallback Level0InputController (e.g., embedded WebViews lacking Input Events Level 2 support).\n\nThe `StringPiece.fromJSON` method trusted `href` attributes from the JSON payload without sanitization. An attacker could craft a draggable element containing a `javascript:` URI in the href attribute that, when dropped into a vulnerable editor, would bypass DOMPurify sanitization and inject executable JavaScript into the DOM.\n\nExploitation requires a specific environment (Level0InputController fallback) and social engineering (victim must drag and drop attacker-controlled content into the editor). Applications using server-side HTML sanitization (such as Rails' built-in sanitizer) are additionally protected, as the payload is neutralized on save.\n\n### Patches\n\nUpdate Recommendation: Users should upgrade to Trix editor version 2.1.18 or later.\n\n\n### References\n\nThe XSS vulnerability was responsibly reported by Hackerone researcher [newbiefromcoma](https://hackerone.com/newbiefromcoma).","state":0,"publishedAt":"2026-03-29T15:22:17+00:00","modifiedAt":"2026-09-10T03:50:59.7224583+00:00","affected":[{"ecosystem":"npm","name":"trix","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.1.18"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"RubyGems","name":"action_text-trix","ranges":[{"type":"ECOSYSTEM","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.1.18"}]}],"versions":["0.0.1","2.1.15","2.1.16","2.1.17"],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/basecamp/trix/security/advisories/GHSA-53p3-c7vp-4mcc","https://github.com/basecamp/trix/commit/9c0a993d9fc2ffe9d56b013b030bc238f9c0557c","https://github.com/basecamp/trix","https://github.com/basecamp/trix/releases/tag/v2.1.18","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/action_text-trix/GHSA-53p3-c7vp-4mcc.yml"],"sourceUrl":"https://github.com/advisories/GHSA-53p3-c7vp-4mcc","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-53p3-c7vp-4mcc","identifiers":["GHSA-53p3-c7vp-4mcc","CVE-2026-73427"]},"retained":false,"historicalAffected":[]}],"coverage":[]}