CVE-2026-73137

HIGH 7.7

Multicloud-operators-subscription: multicloud-operators-subscription: cross-namespace secret exfiltration via helmrelease.repo.secretref.namespace

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-200
Vendor	red hat
Product	red hat advanced cluster management for kubernetes 2.11
Published	Aug 20, 2026
Last Updated	Sep 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.11

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.13

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.14

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.15

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.16

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2.17

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗