Auth bypass in Langgenius Dify
CVE-2026-41950
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.003 (27.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Langgenius Dify — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (release-notes, Release Notes, patch)
- disclosure@vulncheck.com (Exploit, technical-description, Third Party Advisory, exploit)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
- disclosure@vulncheck.com (technical-description, exploit)
Frequently asked questions
- What is CVE-2026-41950?
- CVE-2026-41950 is a medium-severity vulnerability in Langgenius Dify, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-05-05.
- How severe is CVE-2026-41950?
- Medium severity. CVSS v3 base score is 6.5 out of 10.