Python
CVE-2026-8481
CRITICAL
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
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.
AnalysisAI
Authenticated remote code execution in IBM Langflow OSS 1.0.0 through 1.10.0 lets any logged-in user run arbitrary Python — and therefore arbitrary OS commands — with the privileges of the Langflow server process. The flaw is a design failure in the POST /api/v1/validate/code endpoint, which passes user-supplied code straight into Python's exec() with no sandbox, validation, or privilege drop. …
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Within 24 hours, identify all IBM Langflow OSS deployments and determine which versions are running to establish your exposure scope. …
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Same weakness CWE-94 – Code Injection
View allSame technique Code Injection
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External POC / Exploit Code
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