CVE-2026-41949 HIGH

CVE-2026-41949: Dify < 1.14.2 Authorization Bypass via File Preview Endpoint

Vendor Langgenius
Product dify
Weakness CWE-639 · IDOR
Published May 18, 2026
Last update May 26, 2026

CVSS base score

8.2/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Dify before version 1.14.2 contains an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.

Key dates

02Disclosure timeline

May 18, 2026 CVE published
May 26, 2026 Record updated