Home

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.

PUBLISHED Reserved 2026-02-01 | Published 2026-05-16 | Updated 2026-05-18 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

2.2.1
affected

Credits

xxcdd finder

References

www.exploit-db.com/exploits/49636 (ExploitDB-49636) exploit

github.com/CouchCMS/CouchCMS (Official Product Homepage) product

www.vulncheck.com/...ross-site-scripting-via-svg-file-upload (VulnCheck Advisory: CouchCMS 2.2.1 Cross-Site Scripting via SVG File Upload) third-party-advisory

cve.org (CVE-2021-47955)

nvd.nist.gov (CVE-2021-47955)

Download JSON