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CVE record

CVE-2026-2611

Improper Origin Validation in mlflow/mlflow

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.

CVE evidence

Known exploitation

Not listed in fetched KEV catalog

Absence from the fetched catalog does not establish that exploitation has not occurred.

Severity

critical

CVSS 9.6 ยท CVSS_V3

Affected packages

1

Supported package records returned by OSV. Vendor and product names are not used to infer matches.

OSV package mapping

Affected open-source packages

PackageEcosystemFixed versions
mlflowpypi3.10.0