Vulnerability intelligence

CVE-2026-66794

Red Hat multicluster engine for Kubernetes 2.10 CWE-918

A flaw was found in the `cluster-proxy-addon` component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy requests to arbitrary services across any managed cluster. This enables unauthorized access to internal services that would otherwise be protected, potentially leading to information disclosure or further compromise of the cluster environment.

CVSS Score

9.3

Critical

EPSS — Exploit Probability

0.4%

Riskier than 35% of all CVEs · checked 2026-09-29

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories