Dify User Enumeration via Observable Response Discrepancy

Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue. id: CVE-2026-28288 info: name: Dify User Enumeratio...