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CVE-2025-15031: Path Traversal Vulnerability in mlflow/mlflow

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-18 · updated 2026-07-15
• Weakness: CWE-22

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.

Affected products

• mlflow/mlflow: through 3.10.1

References

• https://huntr.com/bounties/09856f77-f968-446f-a930-657d126efe4e
• https://access.redhat.com/security/cve/CVE-2025-15031
• https://bugzilla.redhat.com/show_bug.cgi?id=2448912
• https://huntr.com/bounties/09856f77-f968-446f-a930-657d126efe4e
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-15031.json

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