critical9.6
CVE-2026-28495
GetSimple CMS is a content management system.
Impact
GetSimple CMS is a content management system. The massiveAdmin plugin (v6.0.3) bundled with GetSimpleCMS-CE v3.3.22 allows an authenticated administrator to overwrite the gsconfig.php configuration file with arbitrary PHP code via the gsconfig editor module. The form lacks CSRF protection, enabling a remote unauthenticated attacker to exploit this via Cross-Site Request Forgery against a logged-in admin, achieving Remote Code Execution (RCE) on the web server.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Getsimple-Ce | Getsimple Cms | through 3.3.22 |