What the vulnerability does
01Description
The Kali Forms plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.4.9 via the 'form_process' function. This is due to the 'prepare_post_data' function mapping user-supplied keys directly into internal placeholder storage, combined with the use of 'call_user_func' on these placeholder values. This makes it possible for unauthenticated attackers to execute code on the server.
Explanation of Vulnerability in Simple Terms
02Summary
Kali Forms versions 2.4.9 and earlier contain a code injection vulnerability that allows unauthenticated attackers to run arbitrary PHP code on the site without user interaction. The vulnerability exists in how the plugin processes user input, enabling remote code execution. All sites running affected versions should update immediately.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site and take complete control of it.
Potential impact on your site
04Site Impact
Complete site compromise: attackers can steal data, modify content, install malware, or delete everything.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
March 20, 2026
CVE published
April 8, 2026
Record updated