CVE-2026-5229
CriticalSummary
The Form Notify plugin for WordPress is vulnerable to Authentication Bypass in versions up to 1.1.10. The issue arises from the plugin trusting user-controlled cookie data, allowing unauthenticated access to user accounts.
Risk Assessment
Attackers can gain access to any user account, including administrator accounts, posing a serious security threat to the site.
Recommendation
It is recommended to update the Form Notify plugin to the latest version and review and strengthen authentication mechanisms in the application.
Original NVD description (English source)
The Form Notify plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.1.10. This is due to the plugin trusting user-controlled cookie data to determine which WordPress account to authenticate after a LINE OAuth login. When LINE doesn't provide an email address (which is common), the plugin falls back to reading the 'form_notify_line_email' cookie value without verifying that the LINE account is associated with that email address. This makes it possible for unauthenticated attackers to gain access to any user account on the site, including administrator accounts, by completing a LINE OAuth flow with their own LINE account while injecting a malicious cookie containing the target victim's email address.