CVE-2026-7664

—

CVSS 3.1

9.8 critical

EPSS

<1%p41

Published

Jun 22, 2026 (Jun 22, 2026)

Modified

Jun 26, 2026

Description

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

Vendors: langflow
Products: langflow
Weakness: CWE-287
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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