CVE-2025-15549

low-risk
Published 2026-01-29

FluentCMS 2026 contains a stored cross-site scripting vulnerability that allows authenticated administrators to upload SVG files with embedded JavaScript via the File Management module. Attackers can upload malicious SVG files that execute JavaScript in the browser of any user accessing the uploaded file URL.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Fluentcms

Affected Vendors

Fluentcms

References (2)

Exploit https://github.com/fluentcms/FluentCMS/issues/2404
Third Party Advisory https://www.vulncheck.com/advisories/fluentcms-stored-xss-via-svg-upload-in-file...
24
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal