Individual skill
bypassing-captcha-protections
Identifying weaknesses in CAPTCHA implementations and bypassing them via replay, field removal, method/content-type manipulation, missing server-side validation, and weak OCR-solvable challenges to defeat anti-automation controls.
internal/tools/skills/data/web-application-security/bypassing-captcha-protections/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
- 1,322
- Repository last updated
- Nov 8, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- captcha Declared skill tag
- anti-automation Declared skill tag
- bot-protection Declared skill tag
- bruteforce Declared skill tag
- web-security Declared skill tag
- writing Derived category
- security Derived category
- testing Derived category
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# Bypassing CAPTCHA Protections
## When to Use
- During authorized penetration tests where CAPTCHA is the control protecting login, registration, password reset, contact forms, OTP, checkout, or voting endpoints
- When assessing whether a CAPTCHA actually prevents automation/brute-force or is merely cosmetic (client-side only)
- When validating that CAPTCHA tokens are single-use, time-bound, and verified server-side and bound to the session
- For demonstrating that rate-limiting / abuse controls collapse once the CAPTCHA is removed
- During bug bounty programs targeting broken anti-automation and authentication controls
## Prerequisites
- **Authorization**: Written penetration testing agreement; CAPTCHA bypass enables high-volume requests, so confirm rate-limit scope
- **Burp Suite**: Repeater for single-request tampering, Intruder/Turbo Intruder for replay/brute-force confirmation