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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-2611?
CVE-2026-2611 is classified as a high-severity vulnerability due to the potential for remote exploitation.
How do I fix CVE-2026-2611?
To fix CVE-2026-2611, upgrade MLflow to version 3.10.0 or later, where the improper origin validation issue is resolved.
Who is affected by CVE-2026-2611?
CVE-2026-2611 affects users of MLflow version 3.9.0 and below.
What kind of attack does CVE-2026-2611 enable?
CVE-2026-2611 enables cross-origin request attacks that could allow unauthorized interactions with the MLflow Assistant feature.
Is CVE-2026-2611 a local or remote vulnerability?
CVE-2026-2611 is a remote vulnerability, allowing attackers to exploit it from malicious webpages.