CVE-2026-28495
GetSimple CMS has CSRF to Remote Code Execution via Arbitrary PHP Write in gsconfig.php
- State
- Published
- Severity
- 9.7 Critical
- Published
- Mar 10, 2026
- Updated
- Mar 10, 2026
- Reserved
- Feb 27, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.7 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
GetSimpleCMS-CEGetSimpleCMS-CE |
|
References
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