CVE-2026-41950

Dify < 1.14.0 Authorization Bypass via File UUID

CVSS 6 MEDIUMEPSS 0.3%CWE-639

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.

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

Affected products

langgenius · dify

public PoCs found — 2

cve_referencehuntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01dunverified cve_referencewww.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-appsunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://github.com/langgenius/dify/releases/tag/1.14.0 https://huntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01d https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-uuid https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-apps