CVE-2021-47958 - CVE House
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Status published Medium CVE-2021-47958

CouchCMS 2.2.1 Server-Side Request Forgery via SVG upload

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • xxcdd

Affected Vendor

Affected Software

CouchCMS
Vulnerable Versions:
2.2.1

Timeline

Official Publish: May 15th, 2026
Last Modified: May 15th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)