# CVE-2025-63784: An Open Redirect vulnerability exists in the OAuth callback handler in file…

Source: https://junglewise.ai/threats/cve-2025-63784-an-open-redirect-vulnerability-exists-in-the-oauth-callback  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-07  
License: CC BY 4.0 with a link back

CVE-2025-63784 · Severity: medium · CVSS 6.5 · Published 2025-11-07

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.

Technologies: [Onlook](https://junglewise.ai/threats/technologies/onlook). Vendors: [Onlook](https://junglewise.ai/threats/vendors/onlook).

## Quick answers

**Is CVE-2025-63784 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-63784 being exploited in the wild.

**How severe is CVE-2025-63784?** Medium severity, with a CVSS score of 6.5, published 7 November 2025.

**Which products and versions are affected?** Onlook. The advisory does not name versions.

**Is there a fix for CVE-2025-63784?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-63784?** Check whether you run Onlook. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Onlook

## Related threats

- [Onlook IDOR in tRPC API procedures](https://junglewise.ai/threats/cve-2026-65013-onlook-idor-in-trpc-api-procedures)
- [A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (update…](https://junglewise.ai/threats/cve-2025-63783-a-broken-object-level-authorization-bola-vulnerability-was)