CVE-2026-9077: Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Protocol features

Published Jul 31, 2026
·
Updated

IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.

Affected Software

2 affected components
IBM Langflow OSS<=1.0.0-1.10.3
Langflow Langflow>=1.0.0<1.11.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Langflow OSS to a version that resolves this vulnerability.

    Fixed in 1.11.0

Event History

Jul 31, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Aug 5, 2026
CVE Published
via MITRE·04:24 PM
Data Sourced
via MITRE·04:24 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-9077?

The severity of CVE-2026-9077 is rated high with a score of 8.5.

2

How do I fix CVE-2026-9077?

To mitigate CVE-2026-9077, update IBM Langflow OSS to a version later than 1.10.3 where the vulnerability is resolved.

3

What are the potential impacts of CVE-2026-9077?

CVE-2026-9077 allows remote authenticated attackers to bypass localhost-only restrictions and alter configurations on the host system.

4

Which versions of IBM Langflow OSS are affected by CVE-2026-9077?

IBM Langflow OSS versions 1.0.0 through 1.10.3 are affected by CVE-2026-9077.

5

Is remote access required to exploit CVE-2026-9077?

Yes, remote authenticated access is required to exploit CVE-2026-9077.

Company

Resources

Contact

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