WM Simple Captcha for registration page, customize captcha image according to your theme.
Change width, height, color, set possible characters, add space between two characters, adjust font size, change form label, add your custom css, enable disable refresh button, change refresh button.
Automatic installation is the option as WordPress handles the file transfers itself and you don't even need to leave your browser.
Once you've found the plugin you can view details about it such as the the point release, rating and description..
No, change your setting of captcha image, then enable this for registration page...
Inside wm-simple-captcha classes wm simple captcha front php in the method, which is supposed to do the validation of the code, the whole logic is wrapped in if ) { block..
What this means is that if the request does not contain the captcha challenge field then no errors are output and the captcha is not considered invalid at all, successfully letting the registration through..
Try it yourself, open the wp-login php action=register page, Developer Tools and delete the input box.
They'll send POST request to wp-login php action=register with the username and email parameters and they'll get through.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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