CVE-2026-80047 (GCVE-0-2026-80047)

Vulnerability from cvelistv5 – Published: 2026-09-01 13:40 – Updated: 2026-09-23 17:24
VLAI
Title
Hugging Face Transformers library writes remote code to disk prior to consent check
Summary
A vulnerability in Hugging Face Transformers (versions 4.57.0 to 5.16.1) allows remote Python files to be written to local disk without user consent when using GenerativePreTrainedModel.load_custom_generate(). The function fetches and caches a remote module file before performing the required trust_remote_code consent check, inverting the security model enforced by other code-loading paths (such as AutoConfig, AutoModel, and AutoTokenizer). As a result, attacker‑controlled Python code from custom_generate/generate.py is copied into the user’s ~/.cache/huggingface/modules directory even if the user declines the trust prompt. Although execution is correctly gated, the file write is not reversible and can persist across sessions. This can lead to persistent, unauthorized files on disk and stale cache collisions where cached attacker code may later be executed during trusted model loads. The issue stems from an unconditional file write in dynamic_module_utils.py prior to any trust verification.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:52 UTC
CWE
Assigner
certcc CNA under the mitre root
CNA scorecard E 42/100 over 158 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Hugging Face Transformers Affected: 4.57.0 , ≤ 5.16.1 (custom)
guessed Create a notification for this product.
Show details on NVD website
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