CVE-2025-15549

MEDIUM 4.8

FluentCMS 2026 Stored XSS via SVG Upload in File Management

CVSS Score

4.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	fluentcms
Product	fluentcms
Published	Jan 29, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

FluentCMS / FluentCMS

0 ≤ 0.0.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/fluentcms/FluentCMS/issues/2404 vulncheck.com: https://www.vulncheck.com/advisories/fluentcms-stored-xss-via-svg-upload-in-file-management

Credits

Jarosław Wawiórko Beatriz Fresno Naumova