Vulnerability details
CVE-2026-6859
Red Hat Enterprise Linux AI 3
Instructlab: instructlab: arbitrary code execution due to hardcoded `trust_remote_code=true`
CVSS 3.1
8.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 | All | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://access.redhat.com/security/cve/CVE-2026-6859 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2459998 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6859.json x_sadp-csaf-vex
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Details
- Published
- 2026-04-22
- Last updated
- 2026-07-15
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
0.44%
Probability of exploitation in 30 days
38.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-829Inclusion of Functionality from Untrusted Control Sphere