Authentication Bypass by Spoofing vulnerability in BestWebSoft Google Captcha allows Identity Spoofing. This issue affects Google Captcha: from n/a through 1.78.
The Advanced Google reCaptcha plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including, 1.27 . This makes it possible for unauthenticated attackers to bypass the Built-in Math Captcha Verification.