Bug 2484384 (CVE-2026-5241) - CVE-2026-5241 python-transformers: python-transformers: Arbitrary code execution due to overridden trust_remote_code setting
Summary: CVE-2026-5241 python-transformers: python-transformers: Arbitrary code execut...
Keywords:
Status: NEW
Alias: CVE-2026-5241
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-03 15:02 UTC by OSIDB Bzimport
Modified: 2026-06-03 21:41 UTC (History)
33 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-03 15:02:39 UTC
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.


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