The Listdom – Business Directory and Classified Ads Listings WordPress plugin suffers from a stored cross-site scripting vulnerability due to insufficient sanitization and escaping of the 'shortcode' parameter. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code into pages, which executes when those pages are accessed by other users. The vulnerability affects all versions up to 3.7.0. The CVSS 3.1 base score is 6.4 (medium), with network attack vector, low attack complexity, requiring privileges, no user interaction, and impacts confidentiality and integrity with no availability impact. No patch or official fix has been disclosed yet.

Successful exploitation allows an authenticated user with Contributor-level access or higher to inject and store malicious scripts in the plugin's pages. These scripts execute in the context of other users viewing the injected pages, potentially leading to session hijacking, data theft, or other malicious actions affecting confidentiality and integrity. There is no impact on availability. No known active exploitation has 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 removing the vulnerable plugin to prevent exploitation.