Bug 2566638 (CVE-2026-118626)

Summary: CVE-2026-118626 mlflow: mlflow: Privilege escalation via missing authorization in request handlers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ilpinto, ltomasbo, ykashtan
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MLflow. Due to missing authorization checks within the pre-request handler configuration (BEFORE_REQUEST_HANDLERS), an authenticated remote attacker can access restricted functionality without proper permission. This flaw allows an attacker to escalate privileges and access protected resources.
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Description OSIDB Bzimport 2026-11-04 00:03:05 UTC 
MLflow Tracking Server Issues Missing Authorization Privilege Escalation Vulnerability. This vulnerability allows remote attackers to escalate privileges on affected installations of MLflow. Authentication is required to exploit this vulnerability.

The specific flaw exists within the configuration of the BEFORE_REQUEST_HANDLERS. The issue results from the lack of authorization prior to allowing access to functionality. An attacker can leverage this vulnerability to escalate privileges to resources normally protected from the user. Was ZDI-CAN-32108.