HACKR.GG
Authentication & Access Control

Password Reset Flaws

Learn how password reset flows break — Host header poisoning redirects reset links to attacker servers, and predictable tokens are brute forced in seconds.

Intermediate40 min6 lessons1 hands-on
Start free →I have an account
First lesson free. The full module is part of Pro.

You'll be able to

  • ✓Identify weak password reset token generation (guessable, reusable)
  • ✓Exploit host header injection in password reset emails
  • ✓Abuse predictable tokens to reset another user's password
  • ✓Chain account takeover via password reset with XSS or IDOR

Lessons

  1. 1The $25,000 Password Reset That Went to the Wrong Server
  2. 2Host Header Injection + Token Brute Force
  3. 3Secure vs Insecure Token Design
  4. 4Mini Lab — Spot the Vulnerable Reset Flow
  5. 5Your Turn: Hijack the ResetHANDS-ON
  6. 6Module quiz
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