Vulnerability · Published May 18, 2026 · Assigned by VulnCheck
CVE-2026-41947Dify < 1.14.2 Authorization Bypass via Trace Configuration Endpoints
Critical 9.1
In plain English
A critical-severity authorization bypass via user-controlled key in dify from langgenius. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 6.0% (higher than 93% of all known vulnerabilities).
Official description
Dify before version 1.14.2 contains an authorization bypass vulnerability that allows authenticated editor users to set and enable trace configurations for any application regardless of tenant ownership. Attackers can exploit missing tenant ownership checks in the trace configuration endpoints to redirect all messages and responses from victim applications to attacker-controlled LLM trace providers. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| langgenius | dify | 0 – before 1.14.2 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-apps technical-description, exploit
- https://huntr.com/bounties/a43076b2-fbc8-4750-9647-89a036b52f52 technical-description, exploit
- https://github.com/langgenius/dify/releases/tag/1.14.2 release-notes
- https://github.com/langgenius/dify/pull/35793 issue-tracking
- https://github.com/langgenius/dify/commit/55d05fe52de880cd8497df8cea052351c594fad8 patch
- https://www.vulncheck.com/advisories/dify-authorization-bypass-via-trace-configuration-endpoints third-party-advisory