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CVE-2025-15031

9.1 · CRITICAL

A vulnerability in MLflow's pyfunc extraction process allows for arbitrary file writes due to improper handling of tar archive entries.

Published Mar 18, 2026CWE-22EPSS 0.89%

Overview

CVE-2025-15031 is a critical-severity vulnerability. It was published on March 18, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refhuntr.com/bounties/09856f77-f968-446f-a930-657d126efe4eRefaccess.redhat.com/security/cve/CVE-2025-15031Refbugzilla.redhat.com/show_bug.cgi?id=2448912Refhuntr.com/bounties/09856f77-f968-446f-a930-657d126efe4eRefsecurity.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-15031.json

How CyberStrike helps

Frequently asked questions

What is CVE-2025-15031?

CVE-2025-15031 is a critical-severity vulnerability. It was published on March 18, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-15031?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-15031?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-15031?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-15031 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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