What the vulnerability does
01Description
The Spam protection, Anti-Spam, FireWall by CleanTalk plugin for WordPress is vulnerable to unauthorized Arbitrary Plugin Installation due to an missing empty value check on the 'api_key' value in the 'perform' function in all versions up to, and including, 6.44. This makes it possible for unauthenticated attackers to install and activate arbitrary plugins which can be leveraged to achieve remote code execution if another vulnerable plugin is installed and activated.
Explanation of Vulnerability in Simple Terms
02Summary
CleanTalk's spam protection plugin for WordPress contains a vulnerability that allows an attacker to read sensitive data, modify site content, or disrupt service availability. The attack requires network access and high technical complexity but no authentication or user interaction. All versions up to 6.44 are affected.
What an attacker can do
03Attacker Capabilities
Read sensitive data, modify site content, or cause the site to become unavailable.
Potential impact on your site
04Site Impact
Your site's data could be exposed, content altered, or service disrupted without warning.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication required, but attack complexity is high.
Key dates
06Disclosure timeline
November 26, 2024
CVE published
April 8, 2026
Record updated
