CVE-2026-41950
Dify < 1.14.0 Authorization Bypass via File UUID
MEDIUM 6.0EPSS 0.5%
Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the full contents of files uploaded by other users within the same tenant by supplying an arbitrary file UUID in the files array of a chat-messages request. Attackers can exploit insufficient permission verification in the chat-messages endpoints to access files without ownership validation, bypassing workspace separation and signed URL protections to retrieve sensitive file contents through workflow processing.
- Affected
- langgenius · dify
- CVSS v4.0 VULNCHECK
- 6.0 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS
- 0.47% chance of exploitation in the next 30 days, 40th percentile
- Published
- 2026-05-05
- Updated
- 2026-07-14
Proof-of-concept exploits (2)
- https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiret…
- https://huntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01d
Security advisories
- https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-uuid
- langgenius/dify/releases/tag/1.14.0