The WordPress Transient API is one of the most useful WordPress APIs, provided a quick and easy way to cache data that is expensive to generate.

Attackers have found a way to escalate the benign WordPress REST API flaw and use it to gain full access to a victim's server by installing a hidden backdoor.

Here is how to alter your WordPress search results page to exclude certain posts based on the value of a custom field. It uses the pre_get_posts action hook.