WHMCS Cap Captcha

Cap is a lightweight, modern open-source CAPTCHA alternative using proof-of-work

Introduction

By default WHMCS offers two types of captchas, the built-in-easily-cracked GD based captcha and the easily-cracked-privacy-violating reCAPTCHA by Google.

Features

• Enable Cap captcha on login, register, checkout, ticket, contact pages.
• Support for themes (auto/dark/light).
• Ability to disable credits and have it fully white labeled.
• Ability to exclude captcha when clients are logged in.

Requirements

• PHP 8.x (tested on 8.1.27)
• WHMCS 8.x (tested on 8.9.0)

Installation

1. Download the latest release and unzip it in the root of your WHMCS installation, make sure the hook file is placed in includes/hooks.
2. Create site key in your own Cap server.
3. Edit includes/hooks/hybula_cap and fill following fields:
   • hybulaCapUrl: Your Cap server URL, without ending slash.
   • hybulaCapSite: Your Cap site key.
   • hybulaCapSecret: Your Cap secret key.

Final notes: Due to some limitations, the captcha will NOT be shown when there is an active admin session. If you want to test it, open up your WHMCS in a private window.

Contribute

Contributions are welcome with pull requests (PR).

Sponsored

This project was originally developed by Hybula B.V. and modified by SideCloud.

License

Apache License, Version 2.0 and the Commons Clause Restriction