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

The Nextend Social Login and Register plugin for WordPress is vulnerable to a self-based Reflected Cross-Site Scripting via the ‘error_description’ parameter in all versions up to, and including, 3.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers, with access to a subscriber-level account, to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. NOTE: This vulnerability can be successfully exploited on a vulnerable WordPress instance against an OAuth pre-authenticated higher-level user (e.g., administrator) by leveraging a cross-site request forgery in conjunction with a certain social engineering technique to achieve a critical impact scenario (cross-site scripting to administrator-level account creation). However, successful exploitation requires "Debug mode" to be enabled in the plugin's "Global Settings".

Wordfence https://plugins.trac.wordpress.org/changeset/3042326/nextend-facebook-connect [No types assigned]

Wordfence https://www.wordfence.com/threat-intel/vulnerabilities/id/3bad1d0d-3817-4c7f-a012-5a85b577781e?source=cve [No types assigned]