CVE-2026-2611
Improper Origin Validation in mlflow/mlflow
- State
- Published
- Severity
- 9.6 Critical
- Published
- May 19, 2026
- Updated
- Jul 15, 2026
- Reserved
- Feb 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 9.6 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H | @huntr_ai |
| 3.1 | 9.6 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
mlflow/mlflowmlflow |
|
References
- https://huntr.com/bounties/8462addd-b464-4a84-b6a2-5529604e6e5a
- https://github.com/mlflow/mlflow/commit/8f9c8a53af90842944101eb8b7d60706822c81bc
- https://access.redhat.com/security/cve/CVE-2026-2611vdb-entry
- RHBZ#2479797issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2611.json
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