Medium severity5.4NVD Advisory· Published May 16, 2026

CVE-2021-47955

Description

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/Couchcmsreferences

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.exploit-db.com/exploits/49636nvd
www.vulncheck.com/advisories/couchcms-cross-site-scripting-via-svg-file-uploadnvd

News mentions

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000