wpchill Kali Forms Plugin up to 2.4.9 on WordPress Placeholder form_process code injection

Summaryinfo

A vulnerability classified as critical was found in wpchill Kali Forms Plugin up to 2.4.9 on WordPress. This issue affects the function form_process of the component Placeholder Handler. Executing a manipulation can lead to code injection. The identification of this vulnerability is CVE-2026-3584. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in wpchill Kali Forms Plugin up to 2.4.9 on WordPress. It has been declared as critical. This vulnerability affects the function form_process of the component Placeholder Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared by ISMAILSHADOW. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-3584 since 03/05/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/27/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-13814). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• wpchill

Name

• Kali Forms Plugin

Version

• 2.4.0
• 2.4.1
• 2.4.2
• 2.4.3
• 2.4.4
• 2.4.5
• 2.4.6
• 2.4.7
• 2.4.8
• 2.4.9

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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