by Kastro
Paper/Archive/CVE-2026-8481

CVE-2026-8481

IBM Langflow OSS — Remote Code Execution via Code Validation Endpoint

EPSS 0.9%CVSS 9.9
critical.is priorityof 100
42
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 59.0.590 × 2011.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Langflow OSS1.0.0 – 1.10.0–CNA

Scores by source

ibm (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchibm.com/support/pages/node/7278923