VULNERABILITY INTELLIGENCE
CVE-2021-47958
CVSS score4.3 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2026-05-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Description
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.
Weakness classification
- disclosure@vulncheck.com: CWE-918