Red HatCVE-2026-66780
Red Hat Advanced Cluster Management for Kubernetes 2: secrets in logs
Medium6.5CVE-2026-66780 · Published Aug 18, 2026 · updated Sep 21, 2026
A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-532
- www.cve.org/CVERecord?id=CVE-2026-66780
- nvd.nist.gov/vuln/detail/CVE-2026-66780
- access.redhat.com/errata/RHSA-2026:63016
- access.redhat.com/errata/RHSA-2026:67538
- access.redhat.com/errata/RHSA-2026:67539
- access.redhat.com/errata/RHSA-2026:67540
- access.redhat.com/errata/RHSA-2026:67541
- access.redhat.com/errata/RHSA-2026:67542
- access.redhat.com/errata/RHSA-2026:67543
- access.redhat.com/security/cve/CVE-2026-66780
- bugzilla.redhat.com/show_bug.cgi?id=2507524
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 18 | A flaw was found in the legacy client-initiated account-linking endpoint of... | High7.3 | No fix yet |
| Aug 18 | Red Hat Multicluster Engine for Kubernetes: information disclosure | High8.7 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management for Kubernetes 2: information disclosure | Medium5.4 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management: improper privilege management | Medium5.8 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management for Kubernetes 2: code execution | Medium4.4 | No fix yet |
| Aug 18 | reset-credentials flow of the keycloak-services: weak password recovery | Critical9.1 | No fix yet |