Path traversal in MLflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub.
Summary
MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow Tracking Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of artifact file paths. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26649.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 | 3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f | — | No fix listed | CNA |
| — | mlflow (PyPI) | before 3.8.0rc0 | 3.8.0rc0 | Patch available | GHSA-q2r8-vmq7-fpx2 |
- MLflow VendorMLflow Affected 3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f Fixed in — No fix listed CNA
- mlflow (PyPI) Vendor— Affected before 3.8.0rc0 Fixed in 3.8.0rc0 Patch available GHSA-q2r8-vmq7-fpx2
Remediation
- Fix · GHSA-q2r8-vmq7-fpx2 mlflow (PyPI) Fixed in 3.8.0rc0 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
MLflow — vendor-provided URL
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2026-02250 MLflow Use of Default Password Authentication Bypass VulnerabilityPriority MEDIUM 51
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat OpenShift AI (RHOAI)
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2033
- 2026-10-03 Alias added: GHSA-q2r8-vmq7-fpx2
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-2025-31759 Redis Lua Use-After-Free may lead to remote code execution CVSS 3.1CRITICAL 10.0
- TI-2026-81527 Code execution via scorer deserialization in MLflow servers CVSS 3.1CRITICAL 9.8
- TI-2025-14028 Command Injection in mlflow/mlflow CVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-2033 · CVE Program
- CVE-2026-2033 · NVD
- FIRST EPSS
- GHSA-q2r8-vmq7-fpx2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-2033 · 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