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CVE-2026-5241— Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers

Quick assessment

Affected
huggingface huggingface/transformers
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hugging Face Transformers是Hugging Face开源的一个用于定义最先进机器学习模型的框架，涵盖文本、视觉、音频和多模态模型，可用于推理和训练。 Hugging Face Transformers 5.2.0版本存在安全漏洞，该漏洞源于LightGlue模型加载路径中trust_remote_code参数被覆盖，可能导致远程代码执行。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.94% · P59

Affected Version Matrix 1

VendorProduct Version RangeStatus
huggingface huggingface/transformers unspecified< 5.5.0 affected
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I. Basic Information for CVE-2026-5241

Vulnerability Information
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Vulnerability Title
Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
从非可信控制范围包含功能例程
Source: CVE Program / CVE List V5
Vulnerability Title
Hugging Face Transformers 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hugging Face Transformers是Hugging Face开源的一个用于定义最先进机器学习模型的框架，涵盖文本、视觉、音频和多模态模型，可用于推理和训练。 Hugging Face Transformers 5.2.0版本存在安全漏洞，该漏洞源于LightGlue模型加载路径中trust_remote_code参数被覆盖，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
huggingface huggingface/transformers unspecified ~ 5.5.0 -

II. Public POCs for CVE-2026-5241

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III. Intelligence Information for CVE-2026-5241

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Patches & Fixes for CVE-2026-5241 (1)

Vendor Advisories for CVE-2026-5241 (1)

IV. Related Vulnerabilities

Same product: huggingface/transformers
Same vendor: huggingface
Same weakness: CWE-829

V. Comments for CVE-2026-5241

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