Imagements <= 1.2.5 - Unauthenticated Arbitrary File Upload to RCE
The Imagements WordPress plugin, versions <= 1.2.5, allowed images to be uploaded in comments, however, only checked for the Content-Type HTTP header for validation, which can be tampered with.
This allows unauthenticated attackers to upload arbitrary files by using a valid image Content-Type header along with a PHP file, leading to Remote Code Execution (RCE).
At the time of writing, the plugin had not been updated in over 8 years, and has been removed from the official WordPress repository.
This vulnerability has been given CVE number CVE-2021-24236.
As there plugin hasn't been updated in 8 years and is no longer on the WordPress repository, it is highly recommended that it be removed as soon as possible and an alternative be found.
Proof of Concept
The PoC will be displayed once the issue has been remediated