Is CVE-2026-30940 actively exploited?

No active exploitation of CVE-2026-30940 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30940 be exploited remotely?

Yes. CVE-2026-30940 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30940?

CVE-2026-30940 has a CVSS score of 7.2 (HIGH).

HOME VULNERABILITIESCVE-2026-30940

HIGH

CVE-2026-30940

CWE-22Published: March 31, 2026· Updated: Apr 1, 2026

7.2

CVSS v3.1

EPSS:0.20%probability of exploitation in 30 daysPercentile:42.5th

Official Description

baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.

NVD Source

Technical Analysis

CVE-2026-30940 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.