What’s Vulnerable › Vulnerabilities
CVE-2026-73137: Multicloud-operators-subscription: multicloud-operators-subscription: cross-namespace secret exfiltration via helmrelease.repo.secretref.namespace
- Severity: high (CVSS 7.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-20 · updated 2026-10-26
- Weakness: CWE-200
Description
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.
Affected products
- Red Hat Advanced Cluster Management for Kubernetes 2.11: all versions — fixed in 1787263584
- Red Hat Advanced Cluster Management for Kubernetes 2.13: all versions — fixed in 1787263693
- Red Hat Advanced Cluster Management for Kubernetes 2.14: all versions — fixed in 1787170830
- Red Hat Advanced Cluster Management for Kubernetes 2.15: all versions — fixed in 1787240030
- Red Hat Advanced Cluster Management for Kubernetes 2.16: all versions — fixed in 1787242321
- Red Hat Advanced Cluster Management for Kubernetes 2.17: all versions — fixed in 1787242108
How to fix
Upgrade to a fixed version: Red Hat Advanced Cluster Management for Kubernetes 2.11 1787263584; Red Hat Advanced Cluster Management for Kubernetes 2.13 1787263693; Red Hat Advanced Cluster Management for Kubernetes 2.14 1787170830; Red Hat Advanced Cluster Management for Kubernetes 2.15 1787240030; Red Hat Advanced Cluster Management for Kubernetes 2.16 1787242321; Red Hat Advanced Cluster Management for Kubernetes 2.17 1787242108. Check the vendor advisory for mitigations.
References
- https://access.redhat.com/errata/RHSA-2026:60386
- https://access.redhat.com/errata/RHSA-2026:60387
- https://access.redhat.com/errata/RHSA-2026:60388
- https://access.redhat.com/errata/RHSA-2026:60389
- https://access.redhat.com/errata/RHSA-2026:60390
- https://access.redhat.com/errata/RHSA-2026:60391
- https://access.redhat.com/security/cve/CVE-2026-73137
- https://bugzilla.redhat.com/show_bug.cgi?id=2514223
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