CVE-2026-7663

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CVSS 3.1

9.8 critical

EPSS

<1%p43

Published

Jun 30, 2026 (Jun 30, 2026)

Modified

Jul 2, 2026

Description

IBM Langflow OSS 1.0.0 through 1.9.6 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-285, CWE-863
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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