The vulnerability CVE-2026-28067 affects ThemeREX Bassein up to version 1.0.15 and involves improper control of filenames in PHP include or require statements, resulting in a PHP Local File Inclusion issue. This can allow an attacker to include unauthorized local files, potentially leading to remote code execution or disclosure of sensitive information. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability, with network attack vector but requiring high attack complexity and no privileges or user interaction. No official patch or vendor advisory is currently available.

Successful exploitation can lead to full compromise of the affected system's confidentiality, integrity, and availability due to local file inclusion. This may allow attackers to execute arbitrary code or access sensitive files. No known exploits in the wild have been reported so far.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to vulnerable installations and monitor for unusual activity related to file inclusion attempts. Avoid exposing the affected application to untrusted networks where possible.