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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
langgenius dify affected
Version Status Constraints
< 1.9.0 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/langgenius/dify/issues/24323 cve-icon cve-icon
https://github.com/langgenius/dify/security/advisories/GHSA-9qpf-wcv3-w3qx cve-icon cve-icon
History

Fri, 27 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 27 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Dify has a user enumeration issue
Weaknesses CWE-204
References
Metrics cvssV4_0

{'score': 5.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-27T20:45:44.126Z

Reserved: 2026-02-26T01:52:58.735Z

Link: CVE-2026-28288

cve-icon Vulnrichment

Updated: 2026-02-27T20:44:40.914Z

cve-icon NVD

Status : Received

Published: 2026-02-27T21:16:18.853

Modified: 2026-02-27T21:16:18.853

Link: CVE-2026-28288

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses