Medium severity4.3NVD Advisory· Published May 15, 2026

CVE-2021-47958

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.

Affected products

Couchcms/Couchcmsreferences

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.exploit-db.com/exploits/49675nvd
www.vulncheck.com/advisories/couchcms-server-side-request-forgery-via-svg-uploadnvd

News mentions

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cvss	0.280
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000