CVE-2025-63784 — MEDIUM (6.5)

Vulnerability 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 Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Onlook	Onlook	0.2.32

Related Weaknesses (CWE)

CWE-601

References

https://blog.soohyun.tech/CVE-2025-63784-Open-Redirect-in-Onlook-27e557175d2e80aExploitThird Party Advisory
https://tossbank.notion.site/Open-Redirect-in-onlook-27e557175d2e80ac8641fab59dcBroken Link

FAQ

What is CVE-2025-63784?

CVE-2025-63784 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...

How severe is CVE-2025-63784?

CVE-2025-63784 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-63784?

Check the references section above for vendor advisories and patch information. Affected products include: Onlook Onlook.