CVE-2026-64849

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/{id}/test endpoint calls _validate_webhook_url() in mlflow/utils/validation.py only for the original URL while mlflow/webhooks/delivery.py follows redirects and re-resolves the hostname without pinning the validated address, allowing attackers to reach internal or cloud metadata services and receive response_status and response_body. This issue is fixed in version 3.15.0.

CVSS v3 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939	Patch
https://github.com/mlflow/mlflow/issues/24179	Exploit Issue Tracking Mitigation
https://github.com/mlflow/mlflow/pull/24258	Issue Tracking Patch
https://github.com/mlflow/mlflow/releases/tag/v3.15.0	Release Notes
https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j	Exploit Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849	US Government Resource

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-08-17 22:17

Updated : 2026-08-20 19:16

NVD link : CVE-2026-64849

Mitre link : CVE-2026-64849

CVE.ORG link : CVE-2026-64849

JSON object : View

Products Affected

lfprojects

mlflow

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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