CVE-2021-47955: Couchcms

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

CouchCMS 2.2.1 contains a cross-site scripting vulnerability that allows authenticated attackers to execute arbitrary JavaScript by uploading malicious SVG files through the file upload functionality. Attackers can upload SVG files containing embedded script tags to the browse.php endpoint, which are then executed in users' browsers when the files are accessed or previewed.

Affected products

• Couchcms Couchcms: version 2.2.1 only

Published 2026-05-16. Last modified 2026-06-17.