The vulnerability CVE-2026-28035 in ThemeREX Printy arises from insufficient validation or control over filenames used in PHP include or require statements. This improper control enables an attacker to perform PHP Local File Inclusion, potentially allowing arbitrary code execution or information disclosure. The affected versions include Printy up to and including 1.8. The CVSS 3.1 base score is 8.1, reflecting network attack vector, high attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker to include local files on the server, leading to disclosure of sensitive information, execution of arbitrary code, and full compromise of the affected system's confidentiality, integrity, and availability. Given the high CVSS score and impact metrics, this vulnerability poses a serious security risk to affected installations of ThemeREX Printy.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor ThemeREX communications for updates. Until a fix is available, restricting access to the affected application and limiting exposure to untrusted networks may reduce risk.