Vulnerability · Published Feb 20, 2026 · Assigned by GitHub_M
CVE-2026-27147GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)
Medium 6.9
In plain English
A medium-severity cross-site scripting in GetSimpleCMS-CE from GetSimpleCMS-CE. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| GetSimpleCMS-CE | GetSimpleCMS-CE | <= 3.3.22 |
Weakness: CWE-79 · 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