CVE-2026-30940

7.2 HIGH
Published: March 31, 2026 Modified: April 01, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
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-c5c6-37vq-pjcq
Source: security-advisories@github.com
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.2 / 10.0
EPSS (Exploit Probability)
0.3%
49th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

basercms