id: PYSEC-2026-2656
published: "2026-07-13T14:36:43.722768Z"
modified: "2026-07-13T16:04:53.818081Z"
aliases:
- CVE-2025-15031
- GHSA-fhff-qmm8-h2fp
summary: Arbitrary file write via tar traversal in mlflow
details: A vulnerability in MLflow's pyfunc extraction process allows for arbitrary file writes due to improper handling of tar archive entries. Specifically, the use of `tarfile.extractall` without path validation enables crafted tar.gz files containing `..` or absolute paths to escape the intended extraction directory. This issue affects the latest version of MLflow and poses a high/critical risk in scenarios involving multi-tenant environments or ingestion of untrusted artifacts, as it can lead to arbitrary file overwrites and potential remote code execution.
affected:
- package:
    name: mlflow
    ecosystem: PyPI
    purl: pkg:pypi/mlflow
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 3.9.0rc0
  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
  - 3.2.0
  - 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
references:
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2025-15031
- type: WEB
  url: https://github.com/mlflow/mlflow/commit/3bf6d81ac4d38654c8ff012dbd0c3e9f17e7e346
- type: PACKAGE
  url: https://github.com/mlflow/mlflow
- type: WEB
  url: "https://github.com/mlflow/mlflow/blob/fe4d9be330426904283401f1d2ed914238b6fc37/mlflow/pyfunc/dbconnect_artifact_cache.py#L140"
- type: WEB
  url: https://huntr.com/bounties/09856f77-f968-446f-a930-657d126efe4e
- type: PACKAGE
  url: https://pypi.org/project/mlflow
- type: ADVISORY
  url: https://github.com/advisories/GHSA-fhff-qmm8-h2fp
severity:
- type: CVSS_V3
  score: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N