CVE-2023-6188: Get-Simple Getsimplecms

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability was found in GetSimpleCMS 3.3.16/3.4.0a. It has been rated as critical. This issue affects some unknown processing of the file /admin/theme-edit.php. The manipulation leads to code injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-245735.

Affected products

• Get-Simple Getsimplecms: version 3.3.16 only; version 3.4.0a only

Published 2023-11-17. Last modified 2026-06-17.