CVE-2026-15346 is a reflected cross-site scripting vulnerability in the VikBooking Hotel Booking Engine & PMS WordPress plugin affecting all versions up to and including 1.8.13. The issue stems from improper neutralization of input in the 'category_id' parameter, enabling unauthenticated attackers to inject malicious scripts that execute in the context of the victim's browser. The attack vector requires user interaction (clicking a link) and is limited to browsers supporting access keys due to the injection location in a hidden element. No official patch or remediation level has been published as of now.

Successful exploitation allows an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to information disclosure or session hijacking limited to the scope of the affected web page. The vulnerability requires user interaction and affects confidentiality and integrity but does not impact 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 avoid clicking untrusted links containing the 'category_id' parameter. Monitoring vendor channels for updates and applying patches promptly once released is recommended.