CVE-2026-6859

A flaw was found in InstructLab. The `linux_train.py` script hardcodes `trust_remote_code=True` when loading models from HuggingFace. This allows a remote attacker to achieve arbitrary Python code execution by convincing a user to run `ilab train/download/generate` with a specially crafted malicious model from the HuggingFace Hub. This vulnerability can lead to complete system compromise.

• CWE-829
• CWE-829

• https://access.redhat.com/security/cve/CVE-2026-6859Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2459998Issue Tracking, Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-6859Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2459998Issue Tracking, Vendor Advisory
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6859.json

Published

Apr 22, 2026

Last Modified

Jul 15, 2026

Status

Modified

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