CVE-2026-9186
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Sep 4, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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