CVE-2026-30877CWE-78

baserCMS: OS Command Injection in the baserCMS Update Functionality

Critical · published March 31, 2026

CVSS v3.1
9.1
EPSS
2%
Percentile
81.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02058 · 81.1th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-03-31T00:45Z
EPSS history
Timeline
  • 31 MAR 00:45Z
    baserCMS: OS Command Injection in the baserCMS Update Functionality
    cvelistv5