WordPress 5.4.x Prototype Pollution (5.4 - 5.4.9)
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 5.4.x ranging from 5.4 and up to (and including) 5.4.9 are vulnerable.
Remediation
Update to WordPress version 5.4.10 or latest