CVE-2026-27147CWE-79

GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)

Medium · published February 20, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
19.8
In the wild
Unconfirmed
What it is

GetSimple CMS is a content management system. All versions of GetSimple CMS are vulnerable to XSS through SVG file uploads. Authenticated users can upload SVG files via the administrative upload functionality, but they are not properly sanitized or restricted, allowing an attacker to embed malicious JavaScript. When the uploaded SVG file is accessed, the script executes in the browser. This issue does not have a fix at the time of publication.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00284 · 19.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-20T23:14Z
EPSS history
Timeline
  • 20 FEB 23:14Z
    GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)
    cvelistv5