Improper Restriction of Excessive Authentication Attempts
Kirby is a flat-file CMS, versions 3.5.x prior to 188.8.131.52, 3.6.x prior to 184.108.40.206, 3.7.x prior to 220.127.116.11, and 3.8.x prior to 3.8.1 is subject to user enumeration due to Improper Restriction of Excessive Authentication Attempts. This vulnerability affects you only if you are using the `code` or `password-reset` auth method with the `auth.methods` option or if you have enabled the `debug` option in production. By using two or more IP addresses and multiple login attempts, valid user accounts will lock, but invalid accounts will not, leading to account enumeration. This issue has been patched in versions 18.104.22.168, 22.214.171.124, 126.96.36.199, and 3.8.1. If you cannot update immediately, you can work around the issue by setting the `auth.methods` option to `password`, which disables the code-based login and password reset forms.
CWE-307 - Improper Restriction of Excessive Authentication Attempts
The software does not implement sufficient measures to prevent multiple failed authentication attempts within in a short time frame, making it more susceptible to brute force attacks.