Open Redirect Affecting @backstage/plugin-auth-backend package, versions <0.27.1
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-BACKSTAGEPLUGINAUTHBACKEND-15479718
- published12 Mar 2026
- disclosed12 Mar 2026
- creditUnknown
Introduced: 12 Mar 2026
NewCVE-2026-32235 (opens in a new tab)How to fix?
Upgrade @backstage/plugin-auth-backend to version 0.27.1 or higher.
Overview
@backstage/plugin-auth-backend is an A Backstage backend plugin that handles authentication
Affected versions of this package are vulnerable to Open Redirect via the OAuth redirect URI validation bypass. An attacker can intercept authorization codes by crafting a redirect URI that bypasses the allowlist and leads to an attacker-controlled host, provided a victim approves the OAuth consent request. This is only exploitable if experimental Dynamic Client Registration or Client ID Metadata Documents features are explicitly enabled.
Note:
This issue affects experimental Dynamic Client Registration and Client ID Metadata Documents features with configured allowedRedirectUriPatterns.