Auth bypass in Red Hat Multicluster Engine For Kubernetes

CVE-2026-71299

A flaw was found in Maestro. Its REST API write endpoints were registered without proper authentication middleware. This allows a remote attacker to perform unauthorized write operations, such as creating, modifying, or deleting consumers and resource bundles. This could lead to data integrity issues or a denial of service (DoS).

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-71299?
CVE-2026-71299 is a medium-severity vulnerability in Red Hat Multicluster Engine For Kubernetes, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-10-05.
How severe is CVE-2026-71299?
Medium severity. CVSS v3 base score is 6.5 out of 10.