Bug 2479797 (CVE-2026-2611)

Summary: CVE-2026-2611 mlflow: MLflow: Arbitrary Code Execution via Improper Origin Validation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedCC: jkoehler, lphiri
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MLflow. Improper origin validation in the MLflow Assistant's /ajax-api endpoints allows a remote attacker to exploit cross-origin requests from a malicious webpage. This enables interaction with the MLflow Assistant running on a victim's local machine, bypassing loopback-only restrictions. Consequently, an attacker can modify the Assistant's configuration to gain full access, leading to the execution of arbitrary commands via the Claude Code sub-agent.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-19 11:02:03 UTC 
In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. By bypassing the loopback-only restriction, the attacker can modify the Assistant's configuration to enable full access, which in turn allows the execution of arbitrary commands via the Claude Code sub-agent. This issue is resolved in version 3.10.0.