What is CVE-2026-105761?

CVE-2026-105761 is a high-severity vulnerability in Langgenius Dify, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-10-05.

How severe is CVE-2026-105761?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Langgenius Dify

CVE-2026-105761

Dify is an open-source LLM app development platform. Prior to 1.16.0, the PUT /console/api/apps/<app_id>/server endpoint in api/controllers/console/app/mcp_server.py used AppMCPServerController.put() to retrieve an AppMCPServer by the client-supplied server ID without verifying that the server belonged to the requested application and tenant. An authenticated workspace member could therefore change another application's MCP server status and parameters, potentially redirecting data or disabling the service. This issue is fixed in version 1.16.0.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-05 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Langgenius Dify — versions < 1.16.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-105761?: CVE-2026-105761 is a high-severity vulnerability in Langgenius Dify, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-10-05.
How severe is CVE-2026-105761?: High severity. CVSS v3 base score is 7.1 out of 10.