CVE-2026-55230Vvveb: Stored XSS in Vvveb via sanitizeHTML() filter bypass using a quoted greater-than character

Descripción

Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to version 1.0.8.6, Vvveb's HTML sanitizer fails to strip event-handler attributes when a tag carries a greater-than character inside a quoted attribute value. A low-privilege content author (default role author or contributor) can store a payload in post or product content that runs JavaScript in a browser of every visitor and of any administrator who views or previews that content, which opens a path to admin account takeover. This issue has been patched in version 1.0.8.6.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v
• https://github.com/givanz/Vvveb/releases/tag/1.0.8.6