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CVE

CVE-2026-30877

baserCMS Update Functionality Vulnerable to OS Command Injection
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CVE

CVE-2026-30877

baserCMS Update Functionality Vulnerable to OS Command Injection

Summary

The latest version of baserCMS (basercms-5.2.2) contains an OS command injection vulnerability (CWE-78) in its 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.

Details

Please refer to the attached materials.

OSコマンドインジェクション（baserCMSのアップデート機能）.pdf

​

Impact

An authenticated user with administrator privileges in baserCMS can execute OS commands on the server with the privileges of the user account running baserCMS.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7, https://nvd.nist.gov/vuln/detail/CVE-2026-30877, https://basercms.net/security/JVN_20837860, https://github.com/baserproject/basercms, https://github.com/baserproject/basercms/releases/tag/5.2.3

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00174%
EPSS Percentile
0.3864%
Introduced Version
0
Fix Available
5.2.3

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