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.
History

Wed, 18 Mar 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Path Traversal Vulnerability in mlflow/mlflow
Weaknesses CWE-22
References
Metrics cvssV3_0

{'score': 8.1, 'vector': 'CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-03-18T22:06:47.300Z

Reserved: 2025-12-22T14:49:46.957Z

Link: CVE-2025-15031

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-18T23:17:28.693

Modified: 2026-03-18T23:17:28.693

Link: CVE-2025-15031

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.