CVE-2026-2651

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.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f	Patch
https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc	Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-2651
https://bugzilla.redhat.com/show_bug.cgi?id=2481117
https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc	Exploit Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2651.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-25 07:16

Updated : 2026-07-21 19:10

NVD link : CVE-2026-2651

Mitre link : CVE-2026-2651

CVE.ORG link : CVE-2026-2651

JSON object : View

Products Affected

lfprojects

mlflow

CWE

CWE-862

Missing Authorization

CWE-1220

Insufficient Granularity of Access Control

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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."}, {"lang": "es", "value": "Una vulnerabilidad en las versiones de MLflow =3.10.1.dev0 permite el acceso no autorizado a los puntos finales de carga multiparte (MPU) cuando el modo '--serve-artifacts' est\u00e1 habilitado. La l\u00f3gica de autorizaci\u00f3n no aplica comprobaciones de permisos a nivel de recurso para los puntos finales '/mlflow-artifacts/mpu/ ', lo que permite a los atacantes sobrescribir artefactos pertenecientes a otros usuarios. Esto puede conducir a escrituras no autorizadas entre usuarios, envenenamiento de la cadena de suministro de modelos y ejecuci\u00f3n de c\u00f3digo arbitrario cuando se cargan modelos comprometidos. El problema est\u00e1 resuelto en la versi\u00f3n 3.10.0."}], "lastModified": "2026-07-21T19:10:00.107", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C1C49CD5-5BB0-422B-9A71-5A6832DF6713", "versionEndIncluding": "3.10.1"}], "operator": "OR"}]}], "sourceIdentifier": "security@huntr.dev"}