PYSEC-2026-1978
Transformers Deserialization of Untrusted Data vulnerability
Quick fix
PYSEC-2026-1978 — transformers: upgrade to the fixed version with the command below.
pip install --upgrade 'transformers>=4.38.0'Details
The huggingface/transformers library is vulnerable to arbitrary code execution through deserialization of untrusted data within the `load_repo_checkpoint()` function of the `TFPreTrainedModel()` class. Attackers can execute arbitrary code and commands by crafting a malicious serialized payload, exploiting the use of `pickle.load()` on data from potentially untrusted sources. This vulnerability allows for remote code execution (RCE) by deceiving victims into loading a seemingly harmless checkpoint during a normal training process, thereby enabling attackers to execute arbitrary code on the targeted machine.
Are you affected?
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Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-3568[ADVISORY]
- https://github.com/huggingface/transformers/commit/693667b8ac8138b83f8adb6522ddaf42fa07c125[WEB]
- https://github.com/huggingface/transformers[PACKAGE]
- https://huntr.com/bounties/b3c36992-5264-4d7f-9906-a996efafba8f[WEB]
- https://pypi.org/project/transformers[PACKAGE]
- https://github.com/advisories/GHSA-37q5-v5qm-c9v8[ADVISORY]