Answer in brief
CVE-2026-2651 records a Critical severity (CVSS 9.0) vulnerability in MLflow allows unauthorized access to multipart upload endpoints when the `--serve-artifacts` mode is enabled. The current sources do not mark it as known exploited. The current feed maps mlflow (pip), mlflow (pip). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps mlflow (pip), mlflow (pip). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| mlflowpip | <3.11.0rc0 | 3.11.0rc1 |
| mlflowpip | <3.10.0 | 3.10.0 |
Published upstream
May 25, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Jun 30, 2026
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.
Quoted source text, attributed separately from HOL analysis.