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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0407
Remote Code Execution Vulnerability in Langflow OSS

Original Issue Date:August 12, 2026

Severity Rating: CRITICAL

Software Affected

  • Langflow OSS 1.0.0 through 1.10.0

Overview

A remote code execution vulnerability has been reported in Langflow OSS, which could allow an unauthenticated remote attacker to execute arbitrary code on the affected system.

Target Audience:
All organizations and individuals using Langflow OSS.

Risk Assessment:
Critical risk of arbitrary code execution, which could lead to complete compromise of the affected Langflow instance and the underlying system.

Impact Assessment:
Remote unauthenticated exploitation may lead to complete system compromise.

Description

Langflow OSS is an open-source platform for building and deploying AI-powered workflows and applications.

An unauthenticated remote code execution vulnerability exists in Langflow OSS due to improper authentication and unsafe handling of user-supplied Python code. Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to obtain a SUPERUSER bearer token through the auto-login endpoint and subsequently execute arbitrary Python code on the affected Langflow server through the code validation endpoint. The attacker may thereby execute arbitrary commands with the privileges of the Langflow process.

According to the vendor, the vulnerability affects default deployments where the auto-login feature is enabled and the validation endpoint is network-accessible. Successful exploitation could allow an attacker to compromise the confidentiality, integrity, and availability of the affected system.

Solution

Apply appropriate security updates and mitigations as recommended by the vendor.
https://www.ibm.com/support/pages/node/7278927

Vendor Information

IBM Corporation
https://www.ibm.com/

References

 
https://www.ibm.com/support/pages/node/7278927

CVE Name
CVE-2026-9198

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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