hunt-captcha-bypass

## Autonomous Testing Priority **The fastest test: just omit the CAPTCHA field entirely. Most CAPTCHA bypass bugs are client-side-only validation.** **Pattern 1 — Omit the CAPTCHA field (most common, most automatable):** 1. GET the form/endpoint that shows a CAPTCHA to understand its field name (usually `g-recaptcha-response`, `captcha`, `captcha_token`, `captcha_answer`, `h-captcha-response`) 2. POST the form with ALL fields EXCEPT the CAPTCHA field 3. If the action succeeds (200, redirect, or "success" message) → no server-side CAPTCHA validation 4. Proof: the state-changing action completes without a valid CAPTCHA field (compare against a baseline request that includes it) **Pattern 2 — Empty or null CAPTCHA value:** Instead of omitting the field entirely, include it with an empty string, `null`, `0`, or `undefined`: ``` captcha=&email=test@example.com&password=test123 ``` Some apps validate field presence but not content. **Pattern 3 — Replay a previously solved CAPTCHA token:** 1. Complete one legitimate CAPTCHA challenge and capture the `g-recaptcha-response` token 2. Submit a second request immediately with the SAME token value 3. If the second submission also succeeds → token is not single-use (replay attack) 4. A replayed token can be shared across automated requests **Pattern 4 — Test without CAPTCHA on similar endpoints:** Some apps add CAPTCHA to the registration form but forget the password reset, API endpoint, or mobile API path (`/api/register` vs `/regist...