CVE-2026-78575 PUBLISHED

Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

Assigner: ibm
Reserved: 24.08.2026 Published: 10.09.2026 Updated: 10.09.2026

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	IBM
Product	Langflow OSS
Versions	affected from 1.0.0 to 1.11.5 (incl.)

Solutions

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.6 https://pypi.org/project/langflow/

References

https://www.ibm.com/support/pages/node/7286666

Problem Types

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE