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CVE-2026-41949 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20	[email protected]
https://github.com/langgenius/dify/pull/35797	[email protected]	Issue TrackingMitigationPatch
https://github.com/langgenius/dify/releases/tag/1.14.2	[email protected]
https://huntr.com/bounties/d50a0240-7951-4939-b989-9bded66c7682	[email protected]	ExploitThird Party Advisory
https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-preview-endpoint	[email protected]	Third Party Advisory
https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-apps	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

Product	Versions
dify dify	<= 1.14.1
CPE cpe:2.3:a:dify:dify:::::::: Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 22, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 26, 2026	CVE Modified	[email protected]
May 19, 2026	Reanalysis	[email protected]
May 19, 2026	Initial Analysis	[email protected]
May 18, 2026	New CVE Received	[email protected]