CVE-2026-5241 | BDVDB-2026-337402 Detail
huggingfacehuggingface/transformers
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.
Weaknesses#
- CWE-829 Inclusion of Functionality from Untrusted Control Sphere
References#
- https://huntr.com/bounties/ceb3ce1a-4c45-497a-b25e-cb9a7685e619
- https://github.com/huggingface/transformers/commit/676559d5022b74aaa0cee1cee0842b7f27c5320e
- https://access.redhat.com/security/cve/CVE-2026-5241
- https://bugzilla.redhat.com/show_bug.cgi?id=2484384
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5241.json
- https://access.redhat.com/errata/RHSA-2026:42644
- https://access.redhat.com/errata/RHSA-2026:37275
- https://access.redhat.com/errata/RHSA-2026:34456
- https://access.redhat.com/errata/RHSA-2026:60520
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.