Executive Summary

This vulnerability is an Open Redirect in the OAuth callback handler of the Onlook web application version 0.2.32. It happens because the application trusts the X-Forwarded-Host header without properly validating it when creating a redirect URL. An attacker can manipulate this header to redirect an authenticated user to a malicious external website.

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Impact Analysis

The vulnerability can be exploited by attackers to redirect authenticated users to arbitrary external websites controlled by the attacker. This can lead to phishing attacks where users may be tricked into providing sensitive information or credentials on malicious sites.

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