7.2

CVE-2026-30940

Exploit

baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Basercms ≫ Basercms Version < 5.2.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.05% 0.598
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.2 1.2 5.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

CWE-73 External Control of File Name or Path

The product allows user input to control or influence paths or file names that are used in filesystem operations.

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-c5c6-37vq-pjcq
Vendor Advisory
Exploit