CVE-2026-13484

Description

A vulnerability has been found in MLflow up to 4666cffc7912ea606d592fc38d6a75e2935f65e7. The impacted element is an unknown function of the component Experiment-scoped Label Schema CRUD API. Such manipulation leads to missing authorization. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. A reply to the GitHub issue explains, that "[t]he labeling schema PR has not been merged yet. The auth handlers will be added before the release."

CVSS v3.1 Score

5.0

MEDIUM

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

EPSS — Exploit Prediction

0.0026

Probability of exploitation

0.18%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
lfprojects	mlflow	< 2026-05-26

References

Exploits

https://github.com/mlflow/mlflow/issues/23608 https://github.com/mlflow/mlflow/issues/23608#issuecomment-4560963877 https://github.com/mlflow/mlflow/issues/23608#issuecomment-4560963877

Other References

https://github.com/mlflow/mlflow/ https://vuldb.com/cve/CVE-2026-13484 https://vuldb.com/submit/837658 https://vuldb.com/vuln/374481 https://vuldb.com/vuln/374481/cti

Frequently Asked Questions

What is CVE-2026-13484? +

A vulnerability has been found in MLflow up to 4666cffc7912ea606d592fc38d6a75e2935f65e7. The impacted element is an unknown function of the component Experiment-scoped Label Schema CRUD API. Such manipulation leads to missing authorization. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. A reply to the GitHub issue explains, that "[t]he labeling schema PR has not been merged yet. The auth handlers will be added before the release." It has a CVSS v3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2026-13484? +

CVE-2026-13484 has a CVSS v3.1 score of 5.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0026, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-13484? +

CVE-2026-13484 affects products from lfprojects, specifically: mlflow. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-13484? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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