CVE-2026-28495
GetSimple CMS has CSRF to Remote Code Execution via Arbitrary PHP Write in gsconfig.php
CVSS Score
9.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-352 |
| Vendor | getsimplecms-ce |
| Product | getsimplecms-ce |
| Published | Mar 10, 2026 |
| Last Updated | Mar 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
GetSimpleCMS-CE / GetSimpleCMS-CE
<= 3.3.22