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CVE-2026-41949

Dify < 1.14.2 Authorization Bypass via File Preview Endpoint

Published: May 18, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-639
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.4%
Top 68.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

difydify
SaaS
AI / ML / llm-serving-inference
difylanggenius
Mixed
AI / ML / llm-serving-inference
difycommercialAI / ML
langgeniusoss-projectAI / MLaka dify, langgenius/dify

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20
github.com
https://github.com/langgenius/dify/pull/35797
github.com
https://github.com/langgenius/dify/releases/tag/1.14.2
github.com
and 3 more references View all →

Timeline

Published
May 18, 2026
Last Updated
Jun 22, 2026
News mentions
1

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