CVE-2026-3584 CRITICAL

CVE-2026-3584: Kali Forms <= 2.4.9 - Unauthenticated Remote Code Execution via form_process

Vendor Wpchill
Product Kali Forms — Contact Form & Drag-and-Drop Builder
Weakness CWE-94 · Code injection
Published March 20, 2026
Last update April 8, 2026

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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