{"id":"GHSA-rxpq-xgqx-fr7p","summary":"InstructLab Includes Functionality from Untrusted Control Sphere","details":"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.","aliases":["CVE-2026-6859","PYSEC-2026-2522"],"modified":"2026-07-13T16:43:19.089484180Z","published":"2026-04-22T15:31:45Z","database_specific":{"github_reviewed_at":"2026-04-29T22:08:37Z","nvd_published_at":"2026-04-22T14:17:07Z","cwe_ids":["CWE-829"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6859"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-6859"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2459998"},{"type":"PACKAGE","url":"https://github.com/instructlab/instructlab"}],"affected":[{"package":{"name":"instructlab","ecosystem":"PyPI","purl":"pkg:pypi/instructlab"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.26.1"}]}],"versions":["0.14.0","0.15.1","0.16.0","0.16.1","0.17.0","0.17.1","0.17.2","0.18.0","0.18.0a1","0.18.0a2","0.18.0a3","0.18.0a4","0.18.0a5","0.18.0a6","0.18.0a7","0.18.0b1","0.18.0b2","0.18.0b3","0.18.0b4","0.18.0b5","0.18.0b6","0.18.0rc1","0.18.0rc2","0.18.0rc3","0.18.0rc4","0.18.0rc5","0.18.0rc6","0.18.0rc7","0.18.1","0.18.2","0.18.3","0.18.4","0.19.0","0.19.0a1","0.19.0b1","0.19.0rc1","0.19.1","0.19.2","0.19.3","0.19.4","0.19.5","0.20.0","0.20.0a1","0.20.0a2","0.20.1","0.21.0","0.21.0a0","0.21.0a1","0.21.1","0.21.2","0.22.0","0.22.1","0.22.2","0.23.0","0.23.0a0","0.23.0rc0","0.23.1","0.23.2","0.23.3","0.23.4","0.23.5","0.24.0","0.24.1","0.24.2","0.24.2a0","0.24.3","0.25","0.26.0","0.26.0a1","0.26.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-rxpq-xgqx-fr7p/GHSA-rxpq-xgqx-fr7p.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}