High 7.5Published Oct 27, 2026

CVE-2026-116690MLflow: Arbitrary file read on unauthenticated MLflow servers via prompt model version source

Updated under an hour ago (Oct 29, 2026, 8:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.10.0 until 3.17.0, the prompt branch in _create_model_version() accepts schemeless relative sources because path validation runs only when a source has a URL scheme, and mlflow.prompt.is_prompt is interpreted by tag presence rather than a true value. A remote caller can store a server-local path as the model version artifact location and use /api/2.0/mlflow/model-versions/get-artifact to read files accessible to the MLflow server process. Default unauthenticated servers require no privileges, while basic-auth deployments are exposed to authenticated users who can create registered models. This issue is fixed in version 3.17.0.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

mlflow mlflow mlflow:mlflow (from the name)	from 3.10.0, < 3.17.0	CNA record

References

References

https://github.com/mlflow/mlflow/security/advisories/GHSA-m65p-9j7q-6w33	x-refsource-confirm
https://github.com/mlflow/mlflow/pull/25870	x-refsource-misc
https://github.com/mlflow/mlflow/commit/81730a2ce4ebcd60d5d18f68c96f422ad7e30772	x-refsource-misc
https://github.com/mlflow/mlflow/releases/tag/v3.17.0	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.