Incorrect default permissions in baserCMS - CVE-2026-115481
Published: October 25, 2026
Vulnerability identifier: #VU157661
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-115481
CWE-ID: CWE-276
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access plugin administration functionality that would otherwise be denied to their user group.
The vulnerability exists due to incorrect default permissions in PermissionGroupsService::build() when installing a plugin without config/permission.php with access enabled for all users. A remote user can access plugin routes covered by automatically generated wildcard allow rules to perform administrative operations, including configuring BcCustomContent file fields.
Affected software
baserCMS
How to mitigate CVE-2026-115481
Install security update from vendor's website.
baserCMS - addressed in versions 5.3.2, 5.4.2