{"id":"CVE-2026-55230","published":"2026-10-01T19:17:21.503","lastModified":"2026-10-01T20:17:25.737","description":"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.","cvssScore":8.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/givanz/Vvveb/releases/tag/1.0.8.6","tags":[]},{"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v","tags":[]},{"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v","tags":[]}],"exploitRefs":[{"url":"https://github.com/givanz/Vvveb/releases/tag/1.0.8.6","tags":[]},{"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v","tags":[]},{"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows a low-privilege content author to inject JavaScript via event-handler attributes, potentially leading to admin account takeover.","exploitability":"Exploitation is moderately easy given the preconditions of a low-privilege author role and the ability to control content.","blast_radius":"If exploited, this could result in unauthorized access to admin accounts and potential full system compromise.","remediation":"Upgrade to Vvveb 1.0.8.6 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","web","auth-bypass","javascript","cms"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-03T08:55:52.368Z"}}