PT-2026-53500 · Pypi · Mlflow

Published 2026-06-29 · Updated 2026-06-29

OSV

CVSS v3.1

9.6

Critical

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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.

Fix

Related Identifiers

PYSEC-2026-418

Affected Products

Mlflow

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-2611 · Security Note
• https://osv.dev/vulnerability/PYSEC-2026-418 · Vendor Advisory
• https://github.com/mlflow/mlflow · Note
• https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc · Note
• https://pypi.org/project/mlflow · Note
• https://github.com/advisories/GHSA-67c5-x5mf-rppq · Note
• https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a · Note