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CVE

CVE-2026-2651

MLflow allows unauthorized access to multipart upload endpoints when the `--serve-artifacts` mode is enabled
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CVE

CVE-2026-2651

MLflow allows unauthorized access to multipart upload endpoints when the `--serve-artifacts` mode is enabled

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
C
H
U
9
-
3.0
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
C
H
U
9
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-2651, https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f, https://access.redhat.com/security/cve/CVE-2026-2651, https://bugzilla.redhat.com/show_bug.cgi?id=2481117, https://github.com/mlflow/mlflow, https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2651.json

Severity

9

CVSS Score
0
10

Basic Information

Base CVSS
9
EPSS Probability
0.00345%
EPSS Percentile
0.2674%
Introduced Version
0,2.5.0
Fix Available
3.11.0rc1,3.10.0

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