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Glossary Term

DNS Rebinding

Tricks a victim's browser into talking to internal hosts by rapidly switching DNS answers for the same domain.

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DNS Rebinding

1-minute read

What it is

DNS Rebinding tricks a user’s browser into accessing internal systems by using a specially crafted website.

Why it matters

It can expose internal tools or admin pages that were never meant to be accessible from the internet.

How to reduce risk

  • Restrict browser access to internal services
  • Validate where requests are coming from
  • Monitor unexpected access to internal systems

External resources

  • https://owasp.org/www-community/attacks/DNS_Rebinding
  • https://developer.mozilla.org/en-US/docs/Web/Security/DNS_rebinding