IBM Langflow OSS RCE in /api/v1/validate/code via exec() v1.0.01.10.0
CVE-2026-8481 Published on July 17, 2026
Remote Code Execution via Code Validation Endpoint
IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the code validation API endpoint. The POST /api/v1/validate/code endpoint accepts user-supplied Python code and executes it directly using Python's built-in exec() function without sandboxing, input validation, or privilege restrictions, enabling any authenticated user to execute arbitrary system commands with the full privileges of the Langflow server process.
Vulnerability Analysis
CVE-2026-8481 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-8481 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-8481
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.10.0 is affected.