critical
CVE-2026-2651
github.com/mlflow/mlflow: MLflow: Arbitrary code execution via unauthorized multipart upload access
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
GHSA9.0CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Red Hat9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Bitnami9.1CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by GHSA, Red Hat, Bitnami.
Description
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | mlflow | 3.11.1 |
| pip::GitHub Security Advisory pip | mlflow | 3.10.0 |
| chainguard | mlflow | 3.16.0-r0 |
| wolfi | mlflow | 3.16.0-r0 |
References
- https://access.redhat.com/security/cve/CVE-2026-2651
- https://bugzilla.redhat.com/show_bug.cgi?id=2481117
- https://github.com/advisories/GHSA-8c7q-86fq-vvmh
- https://github.com/mlflow/mlflow
- https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f
- https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2026-2220.yaml
- https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc
- https://nvd.nist.gov/vuln/detail/CVE-2026-2651