Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-28288— Dify has a user enumeration issue

Quick assessment

Affected
langgenius dify
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dify是LangGenius开源的一个开源的 LLM 应用程序开发平台。 dify 1.9.0之前版本存在安全漏洞，该漏洞源于API响应差异，可能导致枚举已注册的电子邮件地址。

AI Predicted 5.3 Difficulty: Easy EPSS 0.71% · P52

Public Exploits 1

Nuclei · 1 CVE-2026-28288.yaml [template]

Possible ATT&CK Techniques 1 AI

T1589 · Gather Victim Identity Information
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-28288

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Dify has a user enumeration issue
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
dify 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dify是LangGenius开源的一个开源的 LLM 应用程序开发平台。 dify 1.9.0之前版本存在安全漏洞，该漏洞源于API响应差异，可能导致枚举已注册的电子邮件地址。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
langgenius dify < 1.9.0 -

II. Public POCs for CVE-2026-28288

# POC Description Source Link Shenlong Link
1 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. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-28288.yaml POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-28288

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-28288 (1)

IV. Related Vulnerabilities

Same product: dify
Same vendor: langgenius
Same weakness: CWE-204

V. Comments for CVE-2026-28288

No comments yet

Leave a comment