The Post Form – Registration Form – Profile Form for User Profiles – Frontend Content Forms for User Submissions (UGC) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'buddyforms_nav' shortcode in all versions up to, and including, 2.8.15 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CWE-79

https://plugins.trac.wordpress.org/changeset/3244167/buddyforms/trunk/includes/shortcodes.php

https://www.wordfence.com/threat-intel/vulnerabilities/id/ff0568e2-3a1e-4ed6-835a-37e3d07d7b63?source=cve