The wpdevelop Booking Calendar plugin contains a stored cross-site scripting vulnerability due to improper input neutralization during web page generation. This allows an attacker with low privileges to inject malicious scripts that execute when viewed by other users, potentially impacting confidentiality, integrity, and availability. The affected versions include all versions up to 10.14.7. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, user interaction required, and a scope change with low impact on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to information disclosure, modification of data, or disruption of service. The impact is rated medium based on the CVSS score of 6.5. There are no reports of active exploitation in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with user-generated content and consider implementing web application firewall (WAF) rules to detect and block XSS payloads. Monitoring for updates from wpdevelop is recommended.