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CVE-2026-6859 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: April 22, 2026

InstructLab - Remote Code Execution

Published: April 22, 2026Updated: April 22, 2026Remote Exploitable

Overview

InstructLab contains a remote code execution caused by hardcoded trust_remote_code=True in linux_train.py when loading models from HuggingFace, letting remote attackers execute arbitrary Python code by convincing users to run malicious models.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Remote attackers can execute arbitrary Python code, potentially leading to complete system compromise.

Mitigation

Update to the latest version that removes or secures trust_remote_code usage.

References

https://access.redhat.com/security/cve/CVE-2026-6859
https://bugzilla.redhat.com/show_bug.cgi?id=2459998

Related Resources

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Details

CVE ID: CVE-2026-6859
Severity: High
CVSS Score: 8.8
Type: command_injection
Status: unconfirmed

CWE

CWE-829

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H