{"id":"CVE-2026-73426","state":"PUBLISHED","title":"Trix: Stored XSS vulnerability through serialized attributes","description":"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.","publishedAt":"2026-08-18T14:24:27.542Z","updatedAt":"2026-08-18T17:47:02.477Z","severity":{"score":4.6,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["basecamp trix"],"affected":[{"vendor":"basecamp","product":"trix","versions":[{"version":"< 2.1.17","status":"affected"}]}],"references":["https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q","https://github.com/basecamp/trix/pull/1282","https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4","https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc","https://github.com/basecamp/trix/releases/tag/v2.1.17"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73426.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73426","state":"PUBLISHED","datePublished":"2026-08-18T14:24:27.542Z","dateUpdated":"2026-08-18T17:47:02.477Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-12T14:32:11.796Z"},"containers":{"cna":{"title":"Trix: Stored XSS vulnerability through serialized attributes","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."}],"affected":[{"vendor":"basecamp","product":"trix","versions":[{"version":"< 2.1.17","status":"affected"}]}],"references":[{"url":"https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q","name":"https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/basecamp/trix/pull/1282","name":"https://github.com/basecamp/trix/pull/1282","tags":["x_refsource_MISC"]},{"url":"https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4","name":"https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4","tags":["x_refsource_MISC"]},{"url":"https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc","name":"https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc","tags":["x_refsource_MISC"]},{"url":"https://github.com/basecamp/trix/releases/tag/v2.1.17","name":"https://github.com/basecamp/trix/releases/tag/v2.1.17","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-18T14:24:27.542Z"},"source":{"advisory":"GHSA-qmpg-8xg6-ph5q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-18T17:19:19.823365Z","id":"CVE-2026-73426","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-18T17:47:02.477Z"}}]}}}