Dify — Vulnerability (CVE-2026-28288)
Date: 2026-02
Affected: dify/dify
Attack vector: other
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-28288
CWE: CWE-204
CVSS: 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

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.


Mitigations:

Architectural layers (MAESTRO):