CVE-2026-9186

published 2026-09-04

CVE-2026-9186: IBM Langflow OSS 1.0.0 through 1.11.2 allows remote authenticated attackers to bypass localhost-only MCP configuration installation by spoofing…

Priority P3 42 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I H A N

IBM Langflow OSS 1.0.0 through 1.11.2 allows remote authenticated attackers to bypass localhost-only MCP configuration installation by spoofing X-Forwarded-For: 127.0.0.1 header, enabling arbitrary writes to IDE config files (~/.cursor/mcp.json, etc.).

Affected

1 ranges

Vendor	Product	Version range	Fixed in
ibm	langflow_oss	1.0.0 – 1.11.2	—

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CWE-284