CVE-2026-28495 — GetSimple CMS has CSRF to Remote Code Execution via Arbitrary PHP Write in gsconfig.php

CVE-2026-28495

GetSimple CMS has CSRF to Remote Code Execution via Arbitrary PHP Write in gsconfig.php PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
GetSimpleCMS-CE / GetSimpleCMS-CE	affected <= 3.3.22

CWE

CWE-352

References

https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-92wv-q2jp-qg88

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.