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Advisories

Dify v1.14.1 Authorization Bypass via File Preview Endpoint

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severity
high
date
Affecting

  • Dify <= 1.14.1

CWE
  • CWE-639 Authorization Bypass Through User-Controlled Key
CVSS
8.2
CVSS V4 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
Credit
Ido Shani and Gal Zaban of Zafran Security
Description
Dify version 1.14.1 and prior contain 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.

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