CVE-2026-30940

Published Mar 31, 2026

Last updated 5 days ago

Overview

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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
basercms

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.2
Impact score
5.9
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

security-advisories@github.com
CWE-22
nvd@nist.gov
CWE-22

Social media

Hype score
Not currently trending

Configurations