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Vulnerabilities

Vulnerability · CVE-2026-2651

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the mode is enabled.

Published May 25, 2026 · catalog updated Jul 21, 2026 · A vulnerability in MLflow

Check if you run it

No confirmed exploitation is on record for CVE-2026-2651. EPSS is 0.54%. Act only if a listed version of A vulnerability in MLflow is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A vulnerability in MLflow).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.54%
Remediation
Version ranges on file
Affected products
cpe lfprojects/mlflow · stated mlflow

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the mode is enabled. The authorization logic does not enforce resource-level permission checks for 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe lfprojects/mlflowversion unspecified
  • stated mlflow<= 3.10.1

How to fix CVE-2026-2651

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-2651. EPSS is 0.54%. Act only if a listed version of A vulnerability in MLflow is installed.

Which versions are affected?

Compare what you have installed with <= 3.10.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1220; CWE-862: Missing Authorization. EPSS 0.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 25, 2026 · NIST NVD

    Detected

    A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the mode is enabled. The authorization logic does not enforce resource-level permission checks for 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 executi

  2. Jul 21, 2026 · NIST NVD

    Updated

    A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the mode is enabled. The authorization logic does not enforce resource-level permission checks for 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 executi

Sources

  • CVE.orgVulnerability recordCVE-2026-2651

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-2651

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-2651

    A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the mode is enabled. The authorization logic does not enforce resource-level permission checks for endpoints, enablin

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.