GHSA-6CF5-W9H3-4RQV Denied Host Validation Bypass in Zitadel Actions

Summary A flaw in the URL validation mechanism of Zitadel actions allows bypassing restrictions intended to block requests to localhost 127.0.0.1. The isHostBlocked check, designed to prevent such requests, can be circumvented by creating a DNS record that resolves to 127.0.0.1. This enables...