CVE-2026-2651

Name: CVE-2026-2651
Creator: NVD / NIST
Published: 2026-05-25T07:16:15.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9/10EPSS 0.37%

Last modified Jun 27, 2026

CVE-2026-2651 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS 3.0

9/10

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.37%

28.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Lfprojects	Mlflow	<= 3.10.1

References

https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966fPatch
https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dcExploit, Third Party Advisory
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-fa98f78f83dcExploit, Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2651.json

Timeline

Published: May 25, 2026
Last Modified: Jun 27, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-2651?

How severe is CVE-2026-2651?

CVE-2026-2651 has a CVSS score of 9/10 (CRITICAL severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2026-2651?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-2651?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST