CVE-2026-17623: Langflow is affected OS Command Injection in Model Context Protocol features

Published Jul 31, 2026
·
Updated

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of the command field in MCP server configurations.

Other sources

Langflow OSS could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of the command field in MCP server configurations.

— IBM

Affected Software

3 affected components
IBM Langflow OSS>=1.0.0<=1.10.3
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·04:34 PM
Data Sourced
via MITRE·04:34 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-2026-17623?

The severity of CVE-2026-17623 is rated as high with a score of 8.8.

2

What type of vulnerability is CVE-2026-17623?

CVE-2026-17623 is classified as an OS Command Injection vulnerability.

3

Who can exploit CVE-2026-17623?

CVE-2026-17623 can be exploited by a remote authenticated attacker.

4

How do I fix CVE-2026-17623?

To fix CVE-2026-17623, ensure proper validation of the command field in MCP server configurations.

5

What software is affected by CVE-2026-17623?

CVE-2026-17623 affects IBM Langflow OSS versions 1.0.0 through 1.10.3.

Company

Resources

Contact

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