{"id":"CVE-2026-73426","sourceIdentifier":"security-advisories@github.com","published":"2026-08-18T15:17:08.043","lastModified":"2026-10-22T22:10:00.250","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.17, Trix is vulnerable to cross-site scripting when a data-trix-serialized-attributes attribute bypasses the DOMPurify sanitizer. An attacker can craft HTML containing a data-trix-serialized-attributes attribute with a malicious payload that, when rendered, executes arbitrary JavaScript in the user's session and may perform unauthorized actions or disclose sensitive information. This issue is fixed in version 2.1.17."},{"lang":"es","value":"Trix es un editor de texto enriquecido de lo que ves es lo que obtienes para la escritura diaria. Antes de 2.1.17, Trix es vulnerable a cross-site scripting cuando un atributo data-trix-serialized-attributes omite el saneador DOMPurify. Un atacante puede elaborar HTML que contiene un atributo data-trix-serialized-attributes con una carga útil maliciosa que, al renderizarse, ejecuta JavaScript arbitrario en la sesión del usuario y puede realizar acciones no autorizadas o divulgar información sensible. Este problema se corrige en la versión 2.1.17."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"basecamp","product":"trix","versions":[{"version":"< 2.1.17","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","baseScore":4.6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.1,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-18T17:19:19.823365Z","id":"CVE-2026-73426","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"references":[{"url":"https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4","source":"security-advisories@github.com"},{"url":"https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc","source":"security-advisories@github.com"},{"url":"https://github.com/basecamp/trix/pull/1282","source":"security-advisories@github.com"},{"url":"https://github.com/basecamp/trix/releases/tag/v2.1.17","source":"security-advisories@github.com"},{"url":"https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q","source":"security-advisories@github.com"}]}