Description
CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability that allows authenticated users with Content Manager access to inject malicious scripts through SVG file uploads. Attackers can upload SVG files containing embedded JavaScript to the file manager, which executes when other authenticated users access the uploaded file, enabling cookie theft and session hijacking.
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 18:30:00 +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 CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability that allows authenticated users with Content Manager access to inject malicious scripts through SVG file uploads. Attackers can upload SVG files containing embedded JavaScript to the file manager, which executes when other authenticated users access the uploaded file, enabling cookie theft and session hijacking.
Title CMS Made Simple 2.2.15 Stored XSS via SVG File Upload
First Time appeared Cmsmadesimple
Cmsmadesimple cms Made Simple
Weaknesses CWE-79
CPEs cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.17:*:*:*:*:*:*:*
cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.18:*:*:*:*:*:*:*
cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.19:*:*:*:*:*:*:*
cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.20:*:*:*:*:*:*:*
cpe:2.3:a:cmsmadesimple:cms_made_simple:2.2.21:*:*:*:*:*:*:*
Vendors & Products Cmsmadesimple
Cmsmadesimple cms Made Simple
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

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


Subscriptions

Cmsmadesimple Cms Made Simple
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-24T01:36:59.018Z

Reserved: 2026-05-15T14:49:49.739Z

Link: CVE-2020-37238

cve-icon Vulnrichment

Updated: 2026-05-18T17:12:16.721Z

cve-icon NVD

Status : Deferred

Published: 2026-05-16T16:16:19.967

Modified: 2026-06-17T03:17:20.177

Link: CVE-2020-37238

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses