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Vulnerability record · CVE-2025-63784 · published 7 November 2025

CVE-2025-63784: Onlook open redirect vulnerability

Onlook · Onlook

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.

6.5 CVSS 3.1 Medium EPSS 0.42% · top 66.5% CWE-601 · Open redirect
6.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.soohyun.tech/CVE-2025-63784-Open-Redirect-in-Onlook-27e557175d2e80ac8641fab59dc36021 ExploitThird Party Advisory
https://tossbank.notion.site/Open-Redirect-in-onlook-27e557175d2e80ac8641fab59dc36021 Broken Link

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.6CVE-2025-63783Onlook improper input validation vulnerabilityA Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (update, delete, add/remove tag) of the Onl…EPSS 0.29%6.1CVE-2025-63785Onlook improper input validation vulnerabilityA DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web application 0.2.32. This vulnerability occur…EPSS 0.27%4.7CVE-2012-0518Oracle Fusion Middleware SSO open redirect flawOracle Fusion Middleware 10.1.4.3.0 contains an unspecified open redirect vulnerability in the Application Server Single Sign-On component, tracked a…KEVEPSS 4.7%analysed6.1CVE-2021-38000Google Chrome Android Intents input validation open redirectChrome on Android before 95.0.4638.69 fails to properly validate untrusted input passed through Intents, allowing a crafted HTML page to redirect the…KEVEPSS 4.9%analysed

Source: NIST National Vulnerability Database (record CVE-2025-63784), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.