Description
WordPress is prone to a prototype pollution vulnerability. Exploiting this issue could allow an attacker to inject key/value �properties� into JavaScript objects, potentially allowing for execution of arbitrary JavaScript in a user�s session if they can trick that user into clicking a link. WordPress versions 4.0.x ranging from 4.0 and up to (and including) 4.0.34 are vulnerable.
Remediation
Update to WordPress version 4.0.35 or latest
References
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md
https://wordpress.org/support/wordpress-version/version-4-0-35/
Related Vulnerabilities
WordPress Plugin BannerMan Cross-Site Scripting (0.2.4)
WordPress Plugin Import and export users and customers CSV Injection (1.16.3.5)
Plone CMS Cryptographic Issues Vulnerability (CVE-2012-6661)
WordPress Plugin WP OAuth Server (OAuth Authentication) Cross-Site Scripting (4.2.1)
WordPress Plugin Custom Fields Search by BestWebSoft Cross-Site Scripting (1.3.1)