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Description

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.

PUBLISHED Reserved 2026-02-17 | Published 2026-05-19 | Updated 2026-06-27 | Assigner @huntr_ai




CRITICAL: 9.6CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Problem types

CWE-346 Origin Validation Error

Product status

Any version before 3.10.0
affected

References

huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a exploit

access.redhat.com/security/cve/CVE-2026-2611 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2479797 (RHBZ#2479797) issue-tracking

security.access.redhat.com/...v2/vex/2026/cve-2026-2611.json

huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a

github.com/...ommit/8f9c8a53af90842944101eb8b7d60706822c81bc

cve.org (CVE-2026-2611)

nvd.nist.gov (CVE-2026-2611)

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