Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers

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Summary

CVECVE-2026-5241
StatePUBLISHED
Assigner@huntr_ai
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-03 14:16:46 UTC
Updated2026-06-03 16:16:31 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.0 8 HIGH from [email protected]

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Problem Types: CWE-829 | CWE-829 CWE-829 Inclusion of Functionality from Untrusted Control Sphere

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary8HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
3.0CNADECLARED8HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Huggingface Huggingface/transformers affected unspecified 5.5.0 custom Not specified

References

ReferenceSourceLinkTags
github.com/huggingface/transformers/commit/676559d5022b74aaa0cee1cee0842... [email protected] github.com
huntr.com/bounties/ceb3ce1a-4c45-497a-b25e-cb9a7685e619 134c704f-9b21-4f2e-91b3-4a467353bcc0 huntr.com
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