CVE-2026-41949

MEDIUM 5.9

Dify v1.14.1 Authorization Bypass via File Preview Endpoint

CVSS Score

5.9

EPSS Score

0.0%

EPSS Percentile

9th

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.

CWE	CWE-639
Vendor	langgenius
Product	dify
Published	May 18, 2026
Last Updated	May 19, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

langgenius / dify

0 ≤ 1.14.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

huntr.com: https://huntr.com/bounties/d50a0240-7951-4939-b989-9bded66c7682 github.com: https://github.com/langgenius/dify/pull/35797 vulncheck.com: https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-preview-endpoint

Credits

Ido Shani and Gal Zaban of Zafran Security