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.

Project Subscriptions

Vendors Products
Mlflow/mlflow Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-fhff-qmm8-h2fp Arbitrary file write via tar traversal in mlflow
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 19 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 19 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

threat_severity

Important


Thu, 19 Mar 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Mlflow
Mlflow mlflow/mlflow
Vendors & Products Mlflow
Mlflow mlflow/mlflow

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'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-03-19T13:52:40.477Z

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

Link: CVE-2025-15031

cve-icon Vulnrichment

Updated: 2026-03-19T13:52:35.965Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-03-19T15:16:18.053

Link: CVE-2025-15031

cve-icon Redhat

Severity : Important

Publid Date: 2026-03-18T22:06:47Z

Links: CVE-2025-15031 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-19T08:55:10Z

Weaknesses