CVE-2026-21861

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://basercms.net/security/JVN_20837860	Vendor Advisory
https://github.com/baserproject/basercms/releases/tag/5.2.3	Release Notes
https://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86g	Exploit Vendor Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-qxmc-6f24-g86g	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-31 01:16

Updated : 2026-06-17 10:19

NVD link : CVE-2026-21861

Mitre link : CVE-2026-21861

CVE.ORG link : CVE-2026-21861

JSON object : View

Products Affected

basercms

basercms

CWE

CWE-78

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

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