CVE-2024-13323 is a stored cross-site scripting vulnerability in the WP Booking Calendar plugin for WordPress, affecting all versions up to and including 10.9.2. The issue arises from improper neutralization of user-supplied input in the 'booking' shortcode, allowing authenticated users with contributor or higher privileges to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to session hijacking or other script-based attacks. The vulnerability is rated medium severity with a CVSS 3.1 score of 6.4, reflecting network attack vector, low attack complexity, and required privileges.

An attacker with contributor-level access or above can inject persistent malicious scripts into pages via the booking shortcode. These scripts execute in the browsers of users who visit the affected pages, potentially compromising user sessions or performing unauthorized actions within the context of the victim's browser. The impact is limited to confidentiality and integrity loss with no direct availability impact. There is no evidence of 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, restrict contributor-level access to trusted users only and consider disabling or limiting use of the booking shortcode. Monitor official wpdevelop communications for updates and apply patches promptly once released.