MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability (MLflow MLflow)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.85 % · percentile 79 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- zdi
- NVD status
- Deferred
Description
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.
Weaknesses (CWE)
- CWE-22 — Improper Limitation of a Pathname to a Restricted Directory
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | zdi |
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | redhat-SADP |
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
| CVSS 3.0 | HIGH 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · zdi-disclosures@trendmicro.com (Secondary) |
Advisories
- GHSA-q2r8-vmq7-fpx2 — MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability
- PYSEC-2026-2658 — MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability
European references
- ENISA EUVD · EUVD-2026-7508
- GCVE · GCVE-0-2026-2033
Affected products
| Product | Versions |
|---|---|
| MLflow · MLflow | affected 3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |