PT-2026-45946 · Hugging Face · Huggingface/Transformers

Published 2026-06-03 · Updated 2026-06-03 · CVE-2026-5241

Mitre

CVSS v3.1

8.0

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

A vulnerability in the LightGlue model loading path of huggingface/transformers version 5.2.0 allows an attacker-controlled model repository to execute arbitrary code during model initialization. The issue arises because the trust remote code parameter, intended to prevent remote code execution, is overridden by untrusted serialized configuration data in a nested code path. Specifically, when loading a LightGlue model using AutoModel.from pretrained() with trust remote code=False, the LightGlueConfig reads the trust remote code value from the untrusted config.json file and propagates it into nested AutoConfig.from pretrained() calls. This results in the execution of attacker-provided Python modules, even when the victim explicitly disables remote code execution. The vulnerability poses a high risk for environments such as API inference servers, research notebooks, CI/CD pipelines, and model evaluation workers, potentially leading to credential theft, lateral movement, or persistence/backdoor deployment.

Fix

Weakness Enumeration

CWE-829

Related Identifiers

CVE-2026-5241

Affected Products

Huggingface/Transformers

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-5241 · Security Note
• https://huntr.com/bounties/ceb3ce1a-4c45-497a-b25e-cb9a7685e619 · Note
• https://github.com/huggingface/transformers/commit/676559d5022b74aaa0cee1cee0842b7f27c5320e · Note