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.
History

Sat, 16 May 2026 15:45:00 +0000

Type Values Removed Values Added
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.
Title CouchCMS 2.2.1 Cross-Site Scripting via SVG File Upload
First Time appeared Couchcms
Couchcms couchcms
Weaknesses CWE-79
CPEs cpe:2.3:a:couchcms:couchcms:1.3.5:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4.7:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.0:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.1:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.2:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.3:*:*:*:*:*:*:*
Vendors & Products Couchcms
Couchcms couchcms
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-16T15:26:07.851Z

Reserved: 2026-02-01T11:24:18.720Z

Link: CVE-2021-47955

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-16T16:16:21.780

Modified: 2026-05-16T16:16:21.780

Link: CVE-2021-47955

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-16T17:30:27Z