CVE-2025-15031

critical

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-15031.json

https://huntr.com/bounties/09856f77-f968-446f-a930-657d126efe4e

https://bugzilla.redhat.com/show_bug.cgi?id=2448912

https://access.redhat.com/security/cve/CVE-2025-15031

Details

Source: Mitre, NVD

Published: 2026-03-18

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.0003