CVE-2026-6543: Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint

Published Apr 28, 2026
·
Updated

IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the privileges of the process running Langflow. This allows reading sensitive environment variables (API keys, DB credentials), modifying files, or launching further attacks on the internal network.

Affected Software

3 affected components
IBM Langflow Desktop>=1.0.0<=1.8.4
IBM Langflow Desktop<=1.0.0 - 1.8.4
Langflow Langflow Desktop>=1.0.0<=1.8.4

Remediation

Information

IBM recommends addressing the vulnerability now by upgrading to IBM Langflow Desktop 1.9.0 or newer https://www.langflow.org/blog/langflow-1-8-desktopIf you are already using Langflow Desktop, upgrade in the application to version 1.9.0To install Langflow Desktop for the first time, visit Download Langflow Desktop.

Event History

Apr 28, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Apr 30, 2026
CVE Published
via MITRE·09:11 PM
Data Sourced
via MITRE·09:11 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-6543?

CVE-2026-6543 is classified as a critical vulnerability due to its potential for authenticated remote code execution.

2

How do I fix CVE-2026-6543?

To mitigate CVE-2026-6543, upgrade IBM Langflow Desktop to version 1.8.5 or later, which addresses this vulnerability.

3

What are the potential impacts of CVE-2026-6543?

CVE-2026-6543 can allow an attacker to execute arbitrary commands, potentially leading to exposure of sensitive environment variables.

4

Who is affected by CVE-2026-6543?

CVE-2026-6543 affects all versions of IBM Langflow Desktop from 1.0.0 to 1.8.4.

5

Is CVE-2026-6543 exploitable without authentication?

No, CVE-2026-6543 requires authenticated access to exploit the remote code execution vulnerability.

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Resources

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