{"id":"CVE-2026-2611","aliases":["GHSA-67c5-x5mf-rppq"],"title":"MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution","summary":"MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution","severity":"critical","cvss":9.6,"cwe":["CWE-346","CWE-940"],"vendor":"mlflow","product":"mlflow","ecosystem":"pip","affected":["mlflow = 3.9.0"],"patched":["mlflow 3.10.0"],"published":"2026-05-19","updated":"2026-10-05","sourceUpdated":"2026-10-05T21:33:12Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-67c5-x5mf-rppq","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2611"},{"url":"https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc"},{"url":"https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a"},{"url":"https://access.redhat.com/security/cve/CVE-2026-2611"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479797"},{"url":"https://github.com/advisories/GHSA-67c5-x5mf-rppq"},{"url":"https://github.com/mlflow/mlflow"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2026-418.yaml"},{"url":"https://pypi.org/project/mlflow"}],"tags":["ghsa","pip"],"epss":0.00414,"epssPercentile":0.33491,"ingestedAt":"2026-10-05T21:34:25.117Z","slug":"CVE-2026-2611","body":"## Overview\n\nIn 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.\n\n## Affected packages\n\n- `mlflow = 3.9.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `mlflow 3.10.0`","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}