Arbitrary File Read via Prompt Tag Source Validation Bypass in mlflow/mlflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 2 fixed, 1 without a fix
Attack profile from CVSS 3.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-22 and the CVSS impact.
Summary
A vulnerability in the `_create_model_version()` handler of `mlflow/server/handlers.py` in mlflow/mlflow versions 3.9.0 and earlier allows an unauthenticated remote attacker to read arbitrary files from the server's filesystem. The issue arises when a `CreateModelVersion` request includes the tag `mlflow.prompt.is_prompt`, which bypasses source path validation. This enables an attacker to store an arbitrary local filesystem path as the model version source. The `get_model_version_artifact_handler()` function later uses this source to serve files without verifying the model version's prompt status, leading to a complete confidentiality compromise. This issue is fixed in version 3.10.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
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 | before 3.10.0 | 3.10.0 | Patch available | CNA |
| — | mlflow (PyPI) | before 3.10.0 | 3.10.0 | Patch available | GHSA-42h5-h8qh-vv9v |
- mlflow/mlflow VendorMLflow Affected before 3.10.0 Fixed in 3.10.0 Patch available CNA
- mlflow (PyPI) Vendor— Affected before 3.10.0 Fixed in 3.10.0 Patch available GHSA-42h5-h8qh-vv9v
Remediation
- Fix · CNA mlflow/mlflow (mlflow) Fixed in 3.10.0
- Fix · GHSA-42h5-h8qh-vv9v mlflow (PyPI) Fixed in 3.10.0 Advisory →
Red Hat 3 advisories
- RHSA-2026:60520 Released 2026-08-27 · Red Hat rating CriticalRHOAI 3.4.4 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9 +47
- RHSA-2026:37275 Released 2026-07-09 · Red Hat rating CriticalRHOAI 3.3.5 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhoai/odh-dashboard-rhel9, registry.redhat.io/rhoai/odh-data-science-pipelines-operator-controller-rhel9, registry.redhat.io/rhoai/odh-feast-operator-rhel9 +45
- RHSA-2026:34456 Released 2026-07-01 · Red Hat rating CriticalRHOAI 3.4.2 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-kserve-storage-initializer-rhel9, registry.redhat.io/rhoai/odh-llama-stack-core-rhel9, registry.redhat.io/rhoai/odh-mlserver-rhel9 +33
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
mlflow/mlflow 3.10.0
2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-02027 Server-Side Request Forgery (SSRF) in mlflow/mlflowPriority MEDIUM 64
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 |
| Red Hat OpenShift AI 3.3 | Fixed | RHSA-2026:37275 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:34456, RHSA-2026:60520 |
Not affected: 3 products
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 3.3
- Red Hat OpenShift AI 3.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2614
- 2026-10-03 Alias added: GHSA-42h5-h8qh-vv9v
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-2026-2614 · CVE Program
- CVE-2026-2614 · NVD
- FIRST EPSS
- GHSA-42h5-h8qh-vv9v · GitHub Advisory Database · CC BY 4.0
- CVE-2026-2614 · 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