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Advisories

Image CAPTCHA for Contact Form 7 and WPForms 3.3.29 CAPTCHA Bypass

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Severity
medium
Date
Affecting

  • Image CAPTCHA for Contact Form 7 and WPForms by HookAndHook (DSGVO/GDPR) <= 3.3.29

CWE
  • CWE-804 Guessable CAPTCHA
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
buiih
Description
Image CAPTCHA for Contact Form 7 and WPForms through 3.3.29 contains a CAPTCHA bypass vulnerability that allows unauthenticated attackers to defeat the anti-automation control by exploiting a hardcoded static answer in the Contact Form 7 integration. Attackers can submit kc_captcha=kc_human to pass validation in cf7ic_check_if_spam() on every protected form, enabling automated contact-form spam and abuse of actions gated only by this CAPTCHA.

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