id: PYSEC-2026-2290
published: "2026-06-03T14:16:46.337Z"
modified: "2026-07-13T05:52:14.826934Z"
aliases:
- CVE-2026-5241
- GHSA-fgcw-684q-jj6r
details: 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.
affected:
- package:
    name: transformers
    ecosystem: PyPI
    purl: pkg:pypi/transformers
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - last_affected: 5.2.0
  versions:
  - "0.1"
  - 2.0.0
  - 2.1.0
  - 2.1.1
  - 2.10.0
  - 2.11.0
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.3.0
  - 2.4.0
  - 2.4.1
  - 2.5.0
  - 2.5.1
  - 2.6.0
  - 2.7.0
  - 2.8.0
  - 2.9.0
  - 2.9.1
  - 3.0.0
  - 3.0.1
  - 3.0.2
  - 3.1.0
  - 3.2.0
  - 3.3.0
  - 3.3.1
  - 3.4.0
  - 3.5.0
  - 3.5.1
  - 4.0.0
  - 4.0.0rc1
  - 4.0.1
  - 4.1.0
  - 4.1.1
  - 4.10.0
  - 4.10.1
  - 4.10.2
  - 4.10.3
  - 4.11.0
  - 4.11.1
  - 4.11.2
  - 4.11.3
  - 4.12.0
  - 4.12.1
  - 4.12.2
  - 4.12.3
  - 4.12.4
  - 4.12.5
  - 4.13.0
  - 4.14.0
  - 4.14.1
  - 4.15.0
  - 4.16.0
  - 4.16.1
  - 4.16.2
  - 4.17.0
  - 4.18.0
  - 4.19.0
  - 4.19.1
  - 4.19.2
  - 4.19.3
  - 4.19.4
  - 4.2.0
  - 4.2.1
  - 4.2.2
  - 4.20.0
  - 4.20.1
  - 4.21.0
  - 4.21.1
  - 4.21.2
  - 4.21.3
  - 4.22.0
  - 4.22.1
  - 4.22.2
  - 4.23.0
  - 4.23.1
  - 4.24.0
  - 4.25.0
  - 4.25.1
  - 4.26.0
  - 4.26.1
  - 4.27.0
  - 4.27.1
  - 4.27.2
  - 4.27.3
  - 4.27.4
  - 4.28.0
  - 4.28.1
  - 4.29.0
  - 4.29.1
  - 4.29.2
  - 4.3.0
  - 4.3.0rc1
  - 4.3.1
  - 4.3.2
  - 4.3.3
  - 4.30.0
  - 4.30.1
  - 4.30.2
  - 4.31.0
  - 4.32.0
  - 4.32.1
  - 4.33.0
  - 4.33.1
  - 4.33.2
  - 4.33.3
  - 4.34.0
  - 4.34.1
  - 4.35.0
  - 4.35.1
  - 4.35.2
  - 4.36.0
  - 4.36.1
  - 4.36.2
  - 4.37.0
  - 4.37.1
  - 4.37.2
  - 4.38.0
  - 4.38.1
  - 4.38.2
  - 4.39.0
  - 4.39.1
  - 4.39.2
  - 4.39.3
  - 4.4.0
  - 4.4.1
  - 4.4.2
  - 4.40.0
  - 4.40.1
  - 4.40.2
  - 4.41.0
  - 4.41.1
  - 4.41.2
  - 4.42.0
  - 4.42.1
  - 4.42.2
  - 4.42.3
  - 4.42.4
  - 4.43.0
  - 4.43.1
  - 4.43.2
  - 4.43.3
  - 4.43.4
  - 4.44.0
  - 4.44.1
  - 4.44.2
  - 4.45.0
  - 4.45.1
  - 4.45.2
  - 4.46.0
  - 4.46.1
  - 4.46.2
  - 4.46.3
  - 4.47.0
  - 4.47.1
  - 4.48.0
  - 4.48.1
  - 4.48.2
  - 4.48.3
  - 4.49.0
  - 4.5.0
  - 4.5.1
  - 4.50.0
  - 4.50.1
  - 4.50.2
  - 4.50.3
  - 4.51.0
  - 4.51.1
  - 4.51.2
  - 4.51.3
  - 4.52.0
  - 4.52.1
  - 4.52.2
  - 4.52.3
  - 4.52.4
  - 4.53.0
  - 4.53.1
  - 4.53.2
  - 4.53.3
  - 4.54.0
  - 4.54.1
  - 4.55.0
  - 4.55.1
  - 4.55.2
  - 4.55.3
  - 4.55.4
  - 4.56.0
  - 4.56.1
  - 4.56.2
  - 4.57.0
  - 4.57.1
  - 4.57.2
  - 4.57.3
  - 4.57.4
  - 4.57.5
  - 4.57.6
  - 4.6.0
  - 4.6.1
  - 4.7.0
  - 4.8.0
  - 4.8.1
  - 4.8.2
  - 4.9.0
  - 4.9.1
  - 4.9.2
  - 5.0.0
  - 5.0.0rc0
  - 5.0.0rc1
  - 5.0.0rc2
  - 5.0.0rc3
  - 5.1.0
  - 5.2.0
  ecosystem_specific: {}
references:
- type: WEB
  url: https://access.redhat.com/security/cve/CVE-2026-5241
- type: WEB
  url: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5241.json
- type: ADVISORY
  url: https://access.redhat.com/errata/RHSA-2026:34456
- type: ADVISORY
  url: https://access.redhat.com/errata/RHSA-2026:37275
- type: REPORT
  url: https://bugzilla.redhat.com/show_bug.cgi?id=2484384
- type: FIX
  url: https://github.com/huggingface/transformers/commit/676559d5022b74aaa0cee1cee0842b7f27c5320e
- type: EVIDENCE
  url: https://huntr.com/bounties/ceb3ce1a-4c45-497a-b25e-cb9a7685e619
- type: ADVISORY
  url: https://github.com/advisories/GHSA-fgcw-684q-jj6r
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H