CVE-2026-9077
Received Received - Intake

Remote Code Execution in IBM Langflow OSS

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: IBM Corporation

Description
IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-9077
EUVD
EUVD-2026-53463

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ibm langflow From 1.0.0 (inc) to 1.10.3 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-807 The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.

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Executive Summary

IBM Langflow OSS versions 1.0.0 through 1.10.3 have a vulnerability where remote authenticated attackers can bypass localhost-only restrictions. This allows them to write arbitrary MCP server configurations into IDE configuration files on the host system.

Detection Guidance

Check for unauthorized MCP server configurations in IDE configuration files. Review logs for remote authenticated access attempts bypassing localhost restrictions. Inspect files in Langflow's configuration directories for unexpected modifications.

Impact Analysis

This vulnerability could allow attackers to modify server configurations, potentially leading to unauthorized access, data breaches, or system compromise. The high impact on integrity (I:H) means attackers can make significant changes to system behavior.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements for GDPR, HIPAA, or other regulations. Unauthorized configuration changes could also result in non-compliance with security controls.

Mitigation Strategies

Update IBM Langflow OSS to a version beyond 1.10.3 to address the localhost restriction bypass. Restrict network access to authenticated users only and review IDE configuration files for unauthorized MCP server configurations.

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