WordPress 4.6.x Prototype Pollution - CVE-2021-20083
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 users session if they can trick that user into clicking a link. WordPress versions 4.6.x ranging from 4.6 and up to (and including) 4.6.22 are vulnerable.