Description

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.

Weaknesses 1

Affected Products 1

References 2

• github.com https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc
  Patch
• huntr.com https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a
  ExploitThird Party Advisory

Remediation

• github.com https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc
  Patch