CVE-2026-73426: 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.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N · CWE-79
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
basecamp: trix
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4 (opens in new tab)
- github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc (opens in new tab)
- github.com/basecamp/trix/pull/1282 (opens in new tab)
- github.com/basecamp/trix/releases/tag/v2.1.17 (opens in new tab)
- github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)