Bug 2517656 (CVE-2026-69146)

Summary: CVE-2026-69146 mlflow: MLflow: Unauthorized data modification via LogInputs endpoint authorization bypass
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, an open-source AI engineering platform. An authenticated user could bypass authorization controls by sending requests to the LogInputs endpoint for another user's data. This allowed the user to inject unauthorized data records into the dataset lineage metadata, leading to integrity compromise of the machine learning model's input data.
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Description OSIDB Bzimport 2026-08-17 21:32:16 UTC 
MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.13.0 until 3.15.0, LogInputs is absent from BEFORE_REQUEST_HANDLERS in the mlflow/server/auth package, allowing any authenticated user to call POST /api/2.0/mlflow/runs/log-inputs for another user's run_id and inject attacker-controlled DatasetInput records into the dataset_inputs lineage metadata without UPDATE permission. This issue is fixed in version 3.15.0.