CVE-2025-12804 is a stored cross-site scripting vulnerability in the wpdevelop Booking Calendar WordPress plugin, affecting all versions up to and including 10.14.6. The vulnerability is due to improper neutralization of input during web page generation, specifically insufficient input sanitization and output escaping on user-supplied shortcode attributes. Authenticated attackers with contributor-level privileges or higher can exploit this to inject arbitrary scripts that execute in the context of users viewing the injected pages. This can lead to limited confidentiality and integrity impacts but does not affect availability. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, and privileges required.

Exploitation allows authenticated users with contributor or higher privileges to inject persistent malicious scripts into pages via shortcode attributes. These scripts execute in the browsers of users who view the affected pages, potentially leading to limited confidentiality and integrity compromise such as session hijacking or unauthorized actions within the context of the affected site. There is no impact on availability. No known exploits in the wild have been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider disabling or limiting use of the affected shortcode. Monitor for plugin updates from wpdevelop and apply them promptly once available.