CVE-2026-2651Critical· 9.0▾ MidnightMLflow allows unauthorized access to multipart upload endpoints when the `--serve-artifacts` mode is enabled
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 49.5 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.3%
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.
mlflow < 3.11.0rc1Upgrade to a patched release:
mlflow 3.11.0rc1Connected by shared product, vendor, weakness, or advisory.
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