affected:
- package:
    ecosystem: PyPI
    name: mlflow
    purl: pkg:pypi/mlflow
  ranges:
  - events:
    - introduced: '0'
    - fixed: 3.11.0rc0
    type: ECOSYSTEM
  versions:
  - 0.0.1
  - 0.1.0
  - 0.2.0
  - 0.2.1
  - 0.3.0
  - 0.4.0
  - 0.4.1
  - 0.4.2
  - 0.5.0
  - 0.5.1
  - 0.5.2
  - 0.6.0
  - 0.7.0
  - 0.8.0
  - 0.8.1
  - 0.8.2
  - 0.9.0
  - 0.9.0.1
  - 0.9.1
  - 1.0.0
  - 1.1.0
  - 1.1.1.dev0
  - 1.10.0
  - 1.11.0
  - 1.12.0
  - 1.12.1
  - '1.13'
  - 1.13.1
  - 1.14.0
  - 1.14.1
  - 1.15.0
  - 1.16.0
  - 1.17.0
  - 1.18.0
  - 1.19.0
  - 1.2.0
  - 1.20.0
  - 1.20.1
  - 1.20.2
  - 1.21.0
  - 1.22.0
  - 1.23.0
  - 1.23.1
  - 1.24.0
  - 1.25.0
  - 1.25.1
  - 1.26.0
  - 1.26.1
  - 1.27.0
  - 1.28.0
  - 1.29.0
  - 1.3.0
  - 1.30.0
  - 1.30.1
  - 1.4.0
  - 1.5.0
  - 1.6.0
  - 1.7.0
  - 1.7.1
  - 1.7.2
  - 1.8.0
  - 1.9.0
  - 1.9.1
  - 2.0.0
  - 2.0.0rc0
  - 2.0.1
  - 2.1.0
  - 2.1.1
  - 2.10.0
  - 2.10.1
  - 2.10.2
  - 2.11.0
  - 2.11.1
  - 2.11.2
  - 2.11.3
  - 2.11.4
  - 2.12.0
  - 2.12.1
  - 2.12.2
  - 2.13.0
  - 2.13.1
  - 2.13.2
  - 2.14.0
  - 2.14.0rc0
  - 2.14.1
  - 2.14.2
  - 2.14.2.dev0
  - 2.14.3
  - 2.15.0
  - 2.15.0rc0
  - 2.15.1
  - 2.16.0
  - 2.16.1
  - 2.16.2
  - 2.17.0
  - 2.17.0rc0
  - 2.17.1
  - 2.17.2
  - 2.18.0
  - 2.18.0rc0
  - 2.19.0
  - 2.19.0rc0
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.20.0
  - 2.20.0rc0
  - 2.20.1
  - 2.20.2
  - 2.20.3
  - 2.20.4
  - 2.21.0
  - 2.21.0rc0
  - 2.21.1
  - 2.21.2
  - 2.21.3
  - 2.22.0
  - 2.22.0rc0
  - 2.22.1
  - 2.22.2
  - 2.22.3
  - 2.22.4
  - 2.22.5
  - 2.3.0
  - 2.3.1
  - 2.3.2
  - 2.4.0
  - 2.4.1
  - 2.4.2
  - 2.5.0
  - 2.6.0
  - 2.7.0
  - 2.7.1
  - 2.8.0
  - 2.8.1
  - 2.9.0
  - 2.9.1
  - 2.9.2
  - 3.0.0
  - 3.0.0rc0
  - 3.0.0rc1
  - 3.0.0rc2
  - 3.0.0rc3
  - 3.0.1
  - 3.1.0
  - 3.1.0rc0
  - 3.1.1
  - 3.1.2
  - 3.1.3
  - 3.1.4
  - 3.10.0
  - 3.10.0rc0
  - 3.10.1
  - 3.2.0
  - 3.2.0rc0
  - 3.3.0
  - 3.3.0rc0
  - 3.3.1
  - 3.3.2
  - 3.4.0
  - 3.4.0rc0
  - 3.5.0
  - 3.5.0rc0
  - 3.5.1
  - 3.6.0
  - 3.6.0rc0
  - 3.7.0
  - 3.7.0rc0
  - 3.8.0
  - 3.8.0rc0
  - 3.8.1
  - 3.9.0
  - 3.9.0rc0
aliases:
- CVE-2026-33866
- GHSA-46r5-x6jq-v8g6
details: "MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint
  used to download saved model artifacts. Due to missing access‑control validation,
  a user without permissions to a given experiment can directly query this endpoint
  and retrieve model artifacts they are not authorized to access.\n\n \nThis issue
  affects MLflow version through 3.10.1"
id: PYSEC-2026-94
modified: '2026-05-20T09:19:08.285844Z'
published: '2026-04-07T13:16:47Z'
references:
- type: ADVISORY
  url: https://cert.pl/en/posts/2026/04/CVE-2026-33865/
- type: FIX
  url: https://github.com/mlflow/mlflow/pull/21708
- type: EVIDENCE
  url: https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectors
- type: ADVISORY
  url: https://github.com/advisories/GHSA-46r5-x6jq-v8g6
severity:
- score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  type: CVSS_V3