CVE-2026-8481

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.

Affected products

Langflow Oss

Langflow

< 1.10.1

CVSS 3.1

9.9 CRITICAL

EPSS

0.8% (54th percentile)

Weakness

CWE-94

NVD status

Analyzed

Published

2026-07-17