CVE-2026-21861

Published: Mar 31, 2026Modified: Apr 1, 2026

7.2

Vector

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

Exploitability: 1.2 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Basercms: Basercms

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Basercms Basercms	Before 5.2.3

Related CWEs

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (4)

https://basercms.net/security/JVN_20837860

Source: security-advisories@github.com

Vendor Advisory

https://github.com/baserproject/basercms/releases/tag/5.2.3

Source: security-advisories@github.com

Release Notes

https://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86g

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86g

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.