CVE-2026-73428

CVE-2026-73428 · Trix: Stored XSS via HTMLParser attribute injection on paste

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Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.18, Trix is vulnerable to stored cross-site scripting when crafted HTML is pasted into the editor. HTMLParser processes a mock attachment in a `<span>` with an empty `data-trix-attachment="{}"` value, causing data-trix-attributes to be applied to a plain string piece. StringPiece.fromJSON accepts an unvalidated href, allowing a javascript: URI to enter the document model and serialized HTML and execute when another user renders and clicks the content. Applications that apply server-side HTML sanitization can neutralize the payload on save. This issue is fixed in version 2.1.18.

CVSS 4.6 · Moyenne · EPSS 0,4% · Correctif disponible

Publication

2026-08-13T22:04:19.121Z

Mise à jour

2026-08-14T18:06:36.864Z

Pile logicielle: node

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