{"id":"BIT-mlflow-2026-2651","summary":"Missing Authorization Validation in mlflow/mlflow","details":"A vulnerability in MLflow versions \u003c=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.","aliases":["CVE-2026-2651","GHSA-8c7q-86fq-vvmh","PYSEC-2026-2220"],"modified":"2026-09-08T08:48:13.831424177Z","published":"2026-06-05T08:52:14.527Z","database_specific":{"cpes":["cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*"],"severity":"Critical"},"references":[{"type":"FIX","url":"https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f"},{"type":"ADVISORY","url":"https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2651"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-2651"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2481117"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2651.json"}],"affected":[{"package":{"name":"mlflow","ecosystem":"Bitnami","purl":"pkg:bitnami/mlflow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.11.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mlflow/BIT-mlflow-2026-2651.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}