Output validation vulnerability in Polylang 3.7.3

The Polylang plugin used in WordPress has a security issue where anyone can inject malicious code into it. This can only be done by someone with Contributor-level access or higher. However, the impact of this vulnerability is only significant if there is another plugin or theme with a similar issue installed on the website. If this is the case, the attacker may be able to delete files, access sensitive information, or run their own code.