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Vulnerabilities CVE-2026-5241

CVE-2026-5241

High
Open
TLP:CLEAR

Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers

NVD CVE.org
Supply Chain Attack Backdoor / C2 Data Exfiltration

AI Analysis

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Description

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.

Details

CVSS Score
8.0
EPSS Score
0.55%

43.1th percentile

CVSS Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Confidence
90%
Published
Jun 3, 2026
Last Modified
Aug 12, 2026
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