The HT Mega Addons for Elementor plugin suffers from a stored cross-site scripting vulnerability due to improper neutralization of user input in the 'titleTag' attribute. Authenticated users with contributor or higher privileges can inject arbitrary JavaScript code into pages via plugin blocks. This code executes in the context of users viewing the compromised pages, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all plugin versions up to 2.4.6. There is no vendor advisory or patch link available, and no known exploitation has been reported.

Successful exploitation allows authenticated contributors or higher to inject persistent malicious scripts into pages, which execute in the browsers of users who view those pages. This can lead to information disclosure or session hijacking but does not impact availability. The vulnerability requires authenticated access with contributor-level permissions, limiting the attack surface. The CVSS score of 6.4 reflects a medium impact on confidentiality and integrity with no impact on availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict contributor-level access to trusted users only and consider removing or disabling the affected plugin if possible. Monitor for plugin updates from devitemsllc addressing this vulnerability.