Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

google/recaptcha
main @ 6721ab8
5
Fixes
1
CVEs
HIGH
Peak severity
Highlights
Auth Bypass: 2 prior fixes. Scrutinize any change in this area.
examples: most-fixed (1 issue). Treat as high-risk during review.
1 high-severity fix in this history; regressions here are high-impact.
Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Path Traversal: The custom autoloader was susceptible to local file inclusion (LFI) because it lacked a namespace restriction, enabling arbitrary file loading via manipulated class names. This is a severe risk in PHP environments where class names can be influenced by external input.
Auth Bypass: A bypass risk exists if domain verification is disabled in the Google Admin Console and the server-side verification logic fails to inspect the solved reCAPTCHA hostname, highlighting the necessity of exposing and validating hostnames within the Response class.
Auth Bypass: Using logical checks like isset() instead of !empty() when validating user-submitted reCAPTCHA responses allows users to bypass verification by submitting empty response parameters.