MEDIUM 6.5 NVD

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 X-Forwarded-For:

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.).

References

https://www.ibm.com/support/pages/node/7285646

Published: 2026-09-04 · Source: NVD · Feed updated: 2026-09-04

This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-09-04 via NVD.

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