CVE-2026-9186

6.5 mediumEPSS 0.4%

Medium (6.5) in langflow langflow. EPSS 0.4% chance of exploitation in the next 30 days.

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.).

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2026-09-04
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

Affected

langflow:langflow

References

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

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