CVE-2021-47958: Couchcms

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.

Affected products

• Couchcms Couchcms: version 2.2.1 only

Published 2026-05-15. Last modified 2026-06-17.