CVE-2025-15549CWE-79

FluentCMS 2026 Stored XSS via SVG Upload in File Management

Medium · published January 29, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
16.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00261 · 16.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-01-29T19:41Z
EPSS history
Timeline
  • 29 JAN 19:41Z
    FluentCMS 2026 Stored XSS via SVG Upload in File Management
    cvelistv5