This vulnerability in Select-Themes Struktur arises from improper validation or control of filenames in PHP include or require statements, enabling PHP Local File Inclusion (LFI). Affected versions include all up to and including 2.5.1. The CVSS v3.1 base score is 8.1, indicating a high impact with network attack vector, high attack complexity, no privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. No patch or official fix details are available from the vendor or advisory sources.

Successful exploitation of this vulnerability could allow an attacker to include local files on the server, potentially leading to disclosure of sensitive information, code execution, or system compromise. The CVSS score of 8.1 reflects high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting access to vulnerable endpoints, applying web application firewalls with rules to detect and block suspicious include/require requests, and reviewing application configurations to limit file inclusion paths. Monitor vendor channels for updates and official patches.