Missing Authorization Affecting mlflow package, versions <3.16.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Sept 2026
- disclosed25 May 2026
Introduced: 25 May 2026
CVE-2026-2651 (opens in a new tab)How to fix?
Upgrade Wolfi mlflow to version 3.16.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mlflow package and not the mlflow package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the --serve-artifacts mode is enabled. The authorization logic does not enforce resource-level permission checks for /mlflow-artifacts/mpu/* endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.
References
- https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f
- https://access.redhat.com/security/cve/CVE-2026-2651
- https://bugzilla.redhat.com/show_bug.cgi?id=2481117
- https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2651.json