CVE-2026-6859

HIGH EPSS 27.3%

Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago

8.8 CVSS 3.1

High

Published Apr 22, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score

8.8

Exploitability

2.8

Impact

5.9

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

27.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-829

Affected Products 2

Vendor	Product	Version	Range
redhat	instructlab	*	any
redhat	enterprise_linux_ai	3.0	any

References 2

access.redhat.com https://access.redhat.com/security/cve/CVE-2026-6859

Vendor Advisory
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2459998

Issue TrackingVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.