The roninwp FAT Services Booking plugin (versions up to 5.6) contains a stored cross-site scripting vulnerability due to improper input neutralization during web page generation. This allows attackers to inject malicious scripts that can execute in the context of users' browsers, potentially leading to compromised user data and session integrity. The CVSS 3.1 base score is 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of affected users, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability. The scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the vulnerable component.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or restricting access to the affected plugin to reduce exposure. Monitor vendor channels for updates and apply patches promptly once available.