Disclosure summary
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.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
GitHub Reviewed Security Advisories · GHSA-67c5-x5mf-rppq
Open original source · Updated Oct 05, 2026
MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution
Source severity: CRITICAL / 0
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| pip | mlflow | = 3.9.0 | 3.10.0 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Reviewed advisory
PUBLISHED 2026-05-19T08:31:37-04:00
MODIFIED 2026-10-05T17:33:12-04:00
INGESTED 2026-10-06T11:45:33-04:00