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TI-2026-02340 Aliases CVE-2026-2734GHSA-w5xq-c4pf-ghq7

Authorization Bypass in SearchModelVersions in mlflow/mlflow

Priority MEDIUM 62CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

In mlflow/mlflow versions up to 3.9.0, the `SearchModelVersions` REST API endpoint and the `mlflowSearchModelVersions` GraphQL query lack proper per-model authorization checks when basic authentication is enabled. This allows any authenticated user to enumerate all model versions across all registered models, regardless of their permission level. The issue arises due to the absence of `SearchModelVersions` in the `BEFORE_REQUEST_VALIDATORS` and `AFTER_REQUEST_HANDLERS` for the REST API, and its omission from `GraphQLAuthorizationMiddleware.PROTECTED_FIELDS` for GraphQL. This vulnerability can expose sensitive information such as model names, version descriptions, source URIs, tags, and other metadata, potentially revealing proprietary or confidential details in multi-tenant environments. The issue is resolved in version 3.10.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00441 38th 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
Partial

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-w5xq-c4pf-ghq7
  • 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-w5xq-c4pf-ghq7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*before 3.10.0VulnerableMLflow
  • cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:* Versions before 3.10.0 Vulnerable ·MLflow

Remediation

  • Fix · CNA mlflow/mlflow (mlflow) Fixed in 3.10.0
  • Fix · GHSA-w5xq-c4pf-ghq7 mlflow (PyPI) Fixed in 3.10.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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-2026-2734
  2. 2026-10-03 Alias added: GHSA-w5xq-c4pf-ghq7

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • 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