CVE-2026-27147: GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-27147?
CVE-2026-27147 is considered a medium severity vulnerability due to its potential for exploitation via stored XSS.
How do I fix CVE-2026-27147?
To fix CVE-2026-27147, update GetSimple CMS to the latest version that patches the SVG file upload vulnerability.
Who is affected by CVE-2026-27147?
All versions of GetSimple CMS are affected by CVE-2026-27147, allowing authenticated users to upload vulnerable SVG files.
What type of vulnerability is CVE-2026-27147?
CVE-2026-27147 is a Stored Cross-Site Scripting (XSS) vulnerability.
Can unauthenticated users exploit CVE-2026-27147?
No, only authenticated users can exploit CVE-2026-27147 through the administrative upload functionality.