CVE-2026-30877: Basercms

High severity, CVSS 7.2. EPSS: 2.1% chance of exploitation in the next 30 days.

baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.

Affected products

• Basercms Basercms: before 5.2.3 (fixed in 5.2.3)

Published 2026-03-31. Last modified 2026-06-17.