CVE-2026-21861
CRITICAL
NVD
CVSS Score
9.1
Severity
CRITICAL
Published
Mar 31, 2026
Vendor
unknown
Description
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS contains an OS command injection vulnerability in the core update functionality. An authenticated administrator can execute arbitrary OS commands on the server due to improper handling of user-controlled input that is directly passed to exec() without sufficient validation or escaping. This issue has been patched in version 5.2.3.