Path traversal in baserCMS - CVE-2026-114623
Published: October 25, 2026
Vulnerability identifier: #VU157657
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-114623
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to read sensitive server-side files outside the theme directory, including application configuration files containing plaintext database credentials.
The vulnerability exists due to missing path traversal validation in ThemeFilesService::get() in the baserCMS BcThemeFile admin screen when handling file viewing requests with the plugin enabled. A remote user can use theme file view permission to send a crafted request to /baser/admin/bc-theme-file/theme_files/view/BcThemeSample/layout/../../../../config/install.php to disclose configuration contents, because access control checks the raw request path before the filesystem resolves the traversal.
Affected software
baserCMS
How to mitigate CVE-2026-114623
Install security update from vendor's website.
baserCMS - addressed in versions 5.3.2, 5.4.2