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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-7663

Unauthenticated Cross-User MCP Resource Access and Tool Execution via Streamable Transport Authorization Bypass

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Status
Published
Published
Updated
Assigning organization
ibm

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

IBM Langflow OSS

  • 1.0.0 to ≤ 1.9.6affected

References