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VULNERABILITIES

CVE-2026-9186 Details

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.).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.ibm.com/support/pages/node/7285646 [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-284Improper Access Control[email protected]

Affected Products

ProductVersions
langflow langflow
>= 1.0.0, < 1.11.3

CPE

  • cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
apple macos
All versions

CPE

  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
linux linux kernel
All versions

CPE

  • cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
microsoft windows
All versions

CPE

  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-9186
NVD Published Date:
Sep 4, 2026
NVD Last Modified:
Sep 8, 2026
Source:
[email protected]
CVE-2026-9186 Details - Not Deferred