CVE-2026-2611: Lfprojects MLflow

Critical severity, CVSS 9.6. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Lfprojects MLflow: from 3.9.0, before 3.10.0 (fixed in 3.10.0)

Published 2026-05-19. Last modified 2026-07-15.