What’s Vulnerable › Vulnerabilities

CVE-2025-11750: User Enumeration via Distinct Error Messages in langgenius/dify-web

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-22 · updated 2026-10-08
• Weakness: CWE-544

Description

In langgenius/dify-web version 1.6.0, the authentication mechanism reveals the existence of user accounts by returning different error messages for non-existent and existing accounts. Specifically, when a login or registration attempt is made with a non-existent username or email, the system responds with a message such as "account not found." Conversely, when the username or email exists but the password is incorrect, a different error message is returned. This discrepancy allows an attacker to enumerate valid user accounts by analyzing the error responses, potentially facilitating targeted social engineering, brute force, or credential stuffing attacks.

Affected products

• langgenius dify: 1.6.0

References

• https://huntr.com/bounties/e7359f9f-c004-4304-9de9-753622d370a1
• https://huntr.com/bounties/e7359f9f-c004-4304-9de9-753622d370a1

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