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 5.1.x ranging from 5.1 and up to (and including) 5.1.12 are vulnerable.
Remediation
Update to WordPress version 5.1.13 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-5-1-13/
Related Vulnerabilities
MySQL Improper Access Control Vulnerability (CVE-2015-3152)
Oracle Database Server CVE-2006-0258 Vulnerability (CVE-2006-0258)
MODX Improper Certificate Validation Vulnerability (CVE-2017-7322)
WordPress Plugin Easy Testimonials Cross-Site Scripting (1.36.1)
WordPress Plugin WP Limit Posts Automatically Cross-Site Request Forgery (0.7)