Critical · published August 15, 2025
🚨 An unauthenticated attacker could upload any file they want! The Bit Form builder plugin for WordPress has a nasty flaw that lacks file type validation. 🔥 Think of it as a restaurant that has a buffet but no one checking what’s on your plate. Any guest can bring in whatever they fancy, potentially including some unsavory items! If exploited, this vulnerability could allow malicious users to upload harmful files to your server, paving the way for remote code execution. Imagine an intruder sneaking in a ‘dish’ that, once served, gives them full control over your kitchen — or, in this case, your entire website!
Think of it as a restaurant that has a buffet but no one checking what’s on your plate. Any guest can bring in whatever they fancy, potentially including some unsavory items! This arbitrary file upload vulnerability exists in the Bit Form builder plugin due to insufficient validation on uploaded files. This means that all versions up to and including 2.20.4, when equipped with the PRO version and an active form with an upload component, are vulnerable to exploitation.
If exploited, this vulnerability could allow malicious users to upload harmful files to your server, paving the way for remote code execution. Imagine an intruder sneaking in a ‘dish’ that, once served, gives them full control over your kitchen — or, in this case, your entire website! To protect your site, immediately update the Bit Form builder plugin to version 2.20.5 or later. Additionally, ensure that file upload restrictions are in place and consider disabling the advanced upload features if they are not necessary. You've got this! By taking these steps, you'll keep your site secure and maintain your superhero status! 🦸♂️