Information disclosure in Red Hat Advanced Cluster Management For Kubernetes 2

CVE-2026-73137

A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluster Management (RHACM). A tenant with HelmRelease create permissions can exploit this vulnerability by manipulating the `secretRef.Namespace` field. This allows the `GetSecret()` function in the HelmRelease controller to fetch sensitive credentials from any namespace, which are then sent to an attacker-controlled Helm repository. This can lead to the exfiltration of credentials from arbitrary namespace Secrets, resulting in information disclosure.

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73137?
CVE-2026-73137 is a high-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Information Disclosure. CVSS score: 7.7/10. Published 2026-08-20.
How severe is CVE-2026-73137?
High severity. CVSS v3 base score is 7.7 out of 10.