CVEvulnerability

CVE-2026-1839

7.8 HIGH Published 2026-04-07 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-07
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
6.5 MEDIUM — CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:H
Weaknesses
CWE-502

Description

A vulnerability in the HuggingFace Transformers library, specifically in the `Trainer` class, allows for arbitrary code execution. The `_load_rng_state()` method in `src/transformers/trainer.py` at line 3059 calls `torch.load()` without the `weights_only=True` parameter. This issue affects all versions of the library supporting `torch>=2.2` when used with PyTorch versions below 2.6, as the `safe_globals()` context manager provides no protection in these versions. An attacker can exploit this vulnerability by supplying a malicious checkpoint file, such as `rng_state.pth`, which can execute arbitrary code when loaded. The issue is resolved in version v5.0.0rc3.

Affected configurations

• huggingface transformers (< 5.0.0) • huggingface transformers 5.0.0

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References