CVE-2026-6543

Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint

Published Apr 30, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

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.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Langflow
Langflow langflow Desktop
CPEs cpe:2.3:a:langflow:langflow_desktop:*:*:*:*:*:*:*:*
Vendors & Products Langflow
Langflow langflow Desktop
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint
First Time appeared Ibm
Ibm langflow Desktop
Weaknesses CWE-94
CPEs cpe:2.3:a:ibm:langflow_desktop:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:langflow_desktop:1.8.4:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm langflow Desktop
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
May 2, 2026, 3:55 AM
Reserved
Apr 17, 2026, 6:06 PM
Status
Analyzed
Published
Apr 30, 2026, 10:16 PM
Modified
Oct 26, 2026, 10:10 PM