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CVE-2026-8446

IBM Langflow OSS

7.5
Severity
High
Published
August 5, 2026
Last modified
August 6, 2026

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects are configured with auth_type=oauth .

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

Weakness

References

CVE-2026-8446 on NVD

Listed in

HighMCP serversMissing authentication

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