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CVE-2026-1839 Detail

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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/huggingface/transformers/commit/03c8082ba4594c9b8d6fe190ca9bed0e5f8ca396 huntr.dev
https://huntr.com/bounties/3c77bb97-e493-493d-9a88-c57f5c536485 huntr.dev

Weakness Enumeration

CWE-ID CWE Name Source
CWE-502 Deserialization of Untrusted Data huntr.dev  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-1839
NVD Published Date:
04/07/2026
NVD Last Modified:
04/07/2026
Source:
huntr.dev