Critical severity9.1NVD Advisory· Published Jun 30, 2026· Updated Jul 2, 2026

CVE-2026-7663

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

Langflow AI/Langflow
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
Range: >=1.0.0,<1.10.0
IBM/Langflow OSSllm-fuzzy
Range: 1.0.0 - 1.9.6

Patches

Vulnerability mechanics

References

www.ibm.com/support/pages/node/7277570nvdVendor Advisory

News mentions

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