{"cve":"CVE-2026-2651","nvd":{"published":"2026-05-25T07:16:15.100","modified":"2026-07-21T19:10:00.107","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","score":9.0},"cwes":["CWE-862","CWE-1220"],"references":["https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f","https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc","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"],"products":["lfprojects:mlflow"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-2651","score":0.00345,"percentile":0.28076,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8c7q-86fq-vvmh","url":"https://osv.dev/vulnerability/GHSA-8c7q-86fq-vvmh","summary":"MLflow allows unauthorized access to multipart upload endpoints when the `--serve-artifacts` mode is enabled","modified":"2026-10-06T19:00:43.189915747Z","packages":[{"ecosystem":"PyPI","name":"mlflow","purl":"pkg:pypi/mlflow","ranges":["<3.10.0"],"fixed":["3.10.0"]}]},{"id":"PYSEC-2026-2220","url":"https://osv.dev/vulnerability/PYSEC-2026-2220","summary":"","modified":"2026-07-13T16:45:09.276740322Z","packages":[{"ecosystem":"PyPI","name":"mlflow","purl":"pkg:pypi/mlflow","ranges":["<3.11.0rc0"],"fixed":["3.11.0rc0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}