What the vulnerability does
01Description
The Bit Form builder plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 2.20.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. For this to be exploitable, the PRO version needs to be installed and activated as well. Additionally a form with an advanced file upload element needs to be published.
Explanation of Vulnerability in Simple Terms
02Summary
Bit Form allows unauthenticated attackers to upload files without restriction, potentially enabling them to run malicious code on the site. The vulnerability affects all versions up to 2.20.3. No authentication or user interaction is required to exploit this flaw. Site administrators should update immediately to a version newer than 2.20.3.
What an attacker can do
03Attacker Capabilities
Upload and execute arbitrary files on the site without authentication.
Potential impact on your site
04Site Impact
Attackers can run malicious code, steal data, or take full control of your site.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
August 15, 2025
CVE published
April 8, 2026
Record updated
