TI-2026-22595 Aliases CVE-2026-28288

Dify has a user enumeration issue

MEDIUM 64CWE-204Published 2026-02-27 · Updated 2026-02-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-204.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00689 52nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed dify (langgenius): 1.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
langgenius	dify	before 1.9.0	1.9.0	Patch available	CNA

dify Vendorlanggenius Affected before 1.9.0 Fixed in 1.9.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:dify:dify::::::::	before 1.9.0	Vulnerable	Dify

cpe:2.3:a:dify:dify:*:*:*:*:*:*:*:* Versions before 1.9.0 Vulnerable ·Dify

Remediation

Fix · CNA dify (langgenius) Fixed in 1.9.0

Timeline

2026-10-02 Threatist record created from CVE-2026-28288

References

Exploit 1

https://github.com/langgenius/dify/security/advisories/GHSA-9qpf-wcv3-w3qx

Other 1

https://github.com/langgenius/dify/issues/24323

TI-2025-35265 Default credentials in Dify thru 1.5.1. CVSS 3.1CRITICAL 9.8
TI-2026-30343 Dify < 1.14.2 Authorization Bypass via Trace Configuration Endpoints CVSS 4.0CRITICAL 9.3
TI-2026-68373 Unauthenticated server-side request forgery in Dify remote file upload CVSS 3.1HIGH 8.3
TI-2026-30344 Dify v1.14.1 Path Traversal via Plugin Daemon Internal API Access CVSS 4.0CRITICAL 9.3
TI-2026-44066 Dify < 1.16.0-rc1 SQL Injection via MyScale Vector Store search_by_full_text CVSS 4.0HIGH 8.7
TI-2025-03045 Unsanitized Input in langgenius/dify CVSS 3.1HIGH 7.2

See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences