CVE-2026-41950

medium

Description

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.

References

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

https://huntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01d

https://www.securityweek.com/data-exposure-flaws-threaten-dify-ai-platform-powering-over-1-million-apps/

https://www.darkreading.com/application-security/difytap-bugs-wiretap-ai-chat-histories

https://thehackernews.com/2026/06/researchers-detail-difytap-flaws-in.html

https://github.com/langgenius/dify/releases/tag/1.14.0

Details

Source: Mitre, NVD

Published: 2026-05-05

Updated: 2026-06-22

Named Vulnerability: DifyTap

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

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

Severity: Medium

CVSS v4

Base Score: 6

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00027