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Last updated 2017-08-10

Unvalidated Redirects and Forwards

Learn more about unvalidated redirects and forwards vulnerability

Unvalidated redirects and forwards are possible when a web application accepts untrusted input that could cause the web application to redirect the request to a URL contained within untrusted input.

By modifying untrusted URL input to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials.

Because the server name in the modified link is identical to the original site, phishing attempts may have a more trustworthy appearance. Unvalidated redirect and forward attacks can also be used to maliciously craft a URL that would pass the application’s access control check and then forward the attacker to privileged functions that they would normally not be able to access.

Learn more about https://www.owasp.org/index.php/Unvalidated_Redirects_and_Forwards_Cheat_Sheet