This vulnerability, identified as CVE-2026-28151, affects Select-Themes Tonda software versions before 2.6. It is an unauthenticated local file inclusion issue caused by improper control of filenames in include or require statements within the PHP program. 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. No official patch or remediation level has been provided yet, and no known exploits are reported in the wild.

Successful exploitation of this vulnerability could allow an attacker to include and execute arbitrary local files on the server without authentication, potentially leading to full system compromise including disclosure, modification, or destruction of data and disruption of service.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected application and monitor for suspicious activity related to file inclusion attempts.