Denial of Service and Data Model Poisoning via URL Encoding in mlflow/mlflow
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
A vulnerability in mlflow/mlflow version 2.11.1 allows attackers to create multiple models with the same name by exploiting URL encoding. This flaw can lead to Denial of Service (DoS) as an authenticated user might not be able to use the intended model, as it will open a different model each time. Additionally, an attacker can exploit this vulnerability to perform data model poisoning by creating a model with the same name, potentially causing an authenticated user to become a victim by using the poisoned model. The issue stems from inadequate validation of model names, allowing for the creation of models with URL-encoded names that are treated as distinct from their URL-decoded counterparts.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- 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 | up to latest | — | No fix listed | CNA |
| — | mlflow (PyPI) | before 2.11.3 | 2.11.3 | Patch available | GHSA-8f8q-q2j7-7j2m |
- mlflow/mlflow VendorMLflow Affected up to latest Fixed in — No fix listed CNA
- mlflow (PyPI) Vendor— Affected before 2.11.3 Fixed in 2.11.3 Patch available GHSA-8f8q-q2j7-7j2m
Remediation
- Fix · GHSA-8f8q-q2j7-7j2m mlflow (PyPI) Fixed in 2.11.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-3099
- 2026-10-03 Alias added: GHSA-8f8q-q2j7-7j2m
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-2024-3099 · CVE Program
- CVE-2024-3099 · NVD
- FIRST EPSS
- GHSA-8f8q-q2j7-7j2m · GitHub Advisory Database · CC BY 4.0
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