Path Traversal Vulnerability in mlflow/mlflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MLflow | mlflow/mlflow | up to latest | — | No fix listed | CNA |
| — | mlflow (PyPI) | before 3.9.0rc0 | 3.9.0rc0 | Patch available | GHSA-fhff-qmm8-h2fp |
- mlflow/mlflow VendorMLflow Affected up to latest Fixed in — No fix listed CNA
- mlflow (PyPI) Vendor— Affected before 3.9.0rc0 Fixed in 3.9.0rc0 Patch available GHSA-fhff-qmm8-h2fp
Remediation
- Fix · GHSA-fhff-qmm8-h2fp mlflow (PyPI) Fixed in 3.9.0rc0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-15031
- 2026-10-03 Alias added: GHSA-fhff-qmm8-h2fp
References
More Mlflow vulnerabilities
- TI-2026-46366 Server-side request forgery in mlflow KEVCVSS 3.1CRITICAL 9.3
- TI-2023-03518 Absolute Path Traversal in mlflow/mlflow CVSS 3.1CRITICAL 10.0
- TI-2023-01113 Path Traversal: '\..\filename' in mlflow/mlflow CVSS 3.1CRITICAL 9.8
- TI-2025-14028 Command Injection in mlflow/mlflow CVSS 3.1CRITICAL 10.0
- TI-2023-05540 MLflow Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2023-02603 Path Traversal: '\..\filename' in mlflow/mlflow CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-15031 · CVE Program
- CVE-2025-15031 · NVD
- FIRST EPSS
- GHSA-fhff-qmm8-h2fp · GitHub Advisory Database · CC BY 4.0
- CVE-2025-15031 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences