This vulnerability arises from insufficient validation of filenames used in PHP include or require statements within the Beds24 Online Booking application by markkinchin. The flaw allows an attacker to perform Local File Inclusion (LFI), potentially leading to disclosure of sensitive files, code execution, or denial of service. The CVSS 3.1 base score is 7.5, reflecting network attack vector, high impact on confidentiality, integrity, and availability, but requiring low privileges and high attack complexity.

Successful exploitation could lead to disclosure of sensitive information, unauthorized code execution, or disruption of service on affected Beds24 Online Booking installations up to version 2.0.28. The vulnerability affects confidentiality, integrity, and availability of the system. There are no reports of active exploitation 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 the affected application and monitor for suspicious activity related to file inclusion attempts. Avoid exposing the application to untrusted networks where possible.