The vulnerability CVE-2026-28034 in ThemeREX Progress arises from improper validation or control of filenames used in PHP include or require statements. This flaw allows local file inclusion, enabling an attacker to execute arbitrary code or disclose sensitive information by including unintended files. The affected versions are from initial releases through version 1.2. The CVSS v3.1 base score is 8.1, indicating high severity with network attack vector, high impact on confidentiality, integrity, and availability, and no privileges or user interaction required.

Successful exploitation of this vulnerability can lead to full compromise of the affected system's confidentiality, integrity, and availability. Attackers may execute arbitrary code or access sensitive files on the server. However, no known exploits are currently reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor ThemeREX advisories for updates. Until a fix is available, restricting access to the affected application and applying strict input validation may reduce risk.