Open Redirect Vulnerability in Onlook Web Application
CVE-2025-63784

6.5MEDIUM

Key Information:

Vendor

Onlook

Status
Onlook web application
Vendor
CVE Published:
7 November 2025

What is CVE-2025-63784?

An Open Redirect vulnerability exists in the OAuth callback handler of the Onlook web application version 0.2.32. This flaw allows the application to trust the X-Forwarded-Host header value without proper validation, enabling a remote attacker to manipulate this header. By doing so, the attacker can craft a redirect URL that can send authenticated users to an arbitrary external site controlled by the attacker, thereby increasing the risk of phishing attacks.

References

https://tossbank.notion.site/Open-Redirect-in-onlook-27e5...
https://blog.soohyun.tech/CVE-2025-63784-Open-Redirect-in...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.