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7.7

Red Hat Advanced Cluster Management may expose secret credentials

CVE-2026-73137 · published 2 months ago
Summary

The multicloud-operators-subscription part of Red Hat Advanced Cluster Management can let a user who can create Helm releases read secret data from any namespace by changing a specific setting. Those secrets could then be sent to an attacker-controlled repository, leaking sensitive information. Apply the latest security update and limit HelmRelease creation rights to trusted users to mitigate the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
red hat red hat advanced cluster management for kubernetes 2 All versions
red hat red hat advanced cluster management for kubernetes 2.13 All versions
red hat red hat advanced cluster management for kubernetes 2.15 All versions
red hat red hat advanced cluster management for kubernetes 2.17 All versions
red hat red hat advanced cluster management for kubernetes 2.11 All versions
red hat red hat advanced cluster management for kubernetes 2.14 All versions
red hat red hat advanced cluster management for kubernetes 2.16 All versions
Original advisory text
Multicloud-operators-subscription: multicloud-operators-subscription: cross-namespace secret exfiltration via helmrelease.repo.secretref.namespace
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
7.7 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-200Information Exposure
Timeline
Published20 Aug 2026
Updated4 Nov 2026
First seen20 Aug 2026
Sources
CVE-2026-73137 · NVD
CVE-2026-73137 · MITRE
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