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TI-2026-02263 Aliases CVE-2026-2651GHSA-8c7q-86fq-vvmh

Missing Authorization Validation in mlflow/mlflow

Priority HIGH 74CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled. The authorization logic does not enforce resource-level permission checks for `/mlflow-artifacts/mpu/*` endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00345 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed mlflow/mlflow (mlflow): 3.10.0mlflow (PyPI): 3.10.0

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

VendorProductAffected versionsFixed inStatusSource
MLflowmlflow/mlflowbefore 3.10.03.10.0Patch availableCNA
—mlflow (PyPI)before 3.10.03.10.0Patch availableGHSA-8c7q-86fq-vvmh
  • 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-8c7q-86fq-vvmh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*up to 3.10.1VulnerableMLflow
  • cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:* Versions up to 3.10.1 Vulnerable ·MLflow

Remediation

  • Fix · CNA mlflow/mlflow (mlflow) Fixed in 3.10.0
  • Fix · GHSA-8c7q-86fq-vvmh mlflow (PyPI) Fixed in 3.10.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2651
  2. 2026-10-03 Alias added: GHSA-8c7q-86fq-vvmh
  3. 2026-10-06 Fix available: PyPI/[email protected] · GHSA-8c7q-86fq-vvmh
  4. 2026-10-06 2 new references · GHSA-8c7q-86fq-vvmh

References

Exploit 1

Patch 1

Advisory 2

Other 5

  • 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
See all 76 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences