CVE-2026-30877 CRITICAL

CVE-2026-30877: baserCMS: OS Command Injection in the baserCMS Update Functionality

Vendor Baserproject
Product basercms
Weakness CWE-78
Published March 31, 2026
Last update April 2, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
April 2, 2026 Record updated