Kali Forms <= 2.4.20 - Unauthenticated Remote Code Execution via 'thisPermalink' Field Parameter

Summary

The Kali Forms — Contact Form & Drag-and-Drop Builder plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.4.20 via the _save_data function. This is due to insufficient validation of the 'thisPermalink' field value before it overwrites a trusted callable placeholder, allowing attacker-controlled strings to reach call_user_func() in _save_data(). This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires the target form to define a field with a name matching one of the reserved placeholder keys ('thisPermalink', 'entryCounter', or 'submission_link'), as check_if_placeholders_changed() only processes POST keys present in the form's field_type_map.

Timeline

1. Aug 1, 2026, 7:49 AM UTCCVE published
2. Aug 3, 2026, 7:22 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Aug 3, 2026, 7:22 PM UTCRecord last updated

Affected versions

• wpchill Kali Forms — Contact Form & Drag-and-Drop Builder

  through 2.4.20

References 12