BaseFortify

Publication date: 2025-11-07

Last updated on: 2025-12-08

Assigner: MITRE

Description

An Open Redirect vulnerability exists in the OAuth callback handler in file onlook/apps/web/client/src/app/auth/callback/route.ts in Onlook web application 0.2.32. The vulnerability occurs because the application trusts the X-Forwarded-Host header value without proper validation when constructing a redirect URL. A remote attacker can send a manipulated X-Forwarded-Host header to redirect an authenticated user to an arbitrary external website under their control, which can be exploited for phishing attacks.

CVSS Scores

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Meta Information

Published

2025-11-07

Last Modified

2025-12-08

Generated

2026-07-06

AI Q&A

2025-11-07

EPSS Evaluated

2026-07-05

NVD

CVE-2025-63784

Affected Vendors & Products

Vendor	Product	Version / Range
onlook	onlook	0.2.32

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-601	The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Attack-Flow Graph

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.

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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