CVE-2026-30877

CRITICAL

baserCMS: OS Command Injection in the baserCMS Update Functionality

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-30877 has a selected CVSS score of 9.1 (critical).

Description

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated Apr 2, 2026 · Source: CVE List

Affected products and versions

2
ProductSourceVersion range

basercms

Browse baserproject / basercms
CVE List< 5.2.3affected

baserproject/basercms

Browse Packagist / baserproject/basercms
GitHub AdvisoryBefore 5.2.3 · Fixed in 5.2.3affected

References

5