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: 2026-05-16
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 18 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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'}


Subscriptions

Couchcms Couchcms
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-24T01:37:13.685Z

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

Link: CVE-2021-47955

cve-icon Vulnrichment

Updated: 2026-05-18T17:31:14.504Z

cve-icon NVD

Status : Deferred

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

Modified: 2026-06-17T04:18:49.517

Link: CVE-2021-47955

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses