VULNERABILITY INTELLIGENCE

CVE-2026-9186

CVSS score6.5 MEDIUM
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-09-04
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

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.).

Weakness classification

  • psirt@us.ibm.com: CWE-284

Primary references