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.
Published: 2026-06-03
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 04 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Huggingface
Huggingface transformers
CPEs cpe:2.3:a:huggingface:transformers:5.2.0:*:*:*:*:*:*:*
Vendors & Products Huggingface
Huggingface transformers
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N'}

cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}


Thu, 04 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N'}

threat_severity

Important


Wed, 03 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 14:15:00 +0000

Type Values Removed Values Added
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.
Title Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers
Weaknesses CWE-829
References
Metrics cvssV3_0

{'score': 8, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N'}


Subscriptions

Huggingface Transformers
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-06-03T15:45:36.684Z

Reserved: 2026-03-31T14:26:14.353Z

Link: CVE-2026-5241

cve-icon Vulnrichment

Updated: 2026-06-03T15:45:33.083Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-03T14:16:46.337

Modified: 2026-06-04T18:54:28.290

Link: CVE-2026-5241

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-03T12:33:10Z

Links: CVE-2026-5241 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T08:30:24Z

Weaknesses