Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 6 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-532.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 | — | 1789135606 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 | — | 1789131397 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 | — | 1789136328 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 | — | 1789136327 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | — | 1789136320 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | — | 1787854416 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | — | 1790670243 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | — | 1790670912 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | 1788105072 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | 1788073481 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | 1788572527 | Patch available | CNA |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | — | — | No fix listed | CNA |
- Red Hat Advanced Cluster Management for Kubernetes 2.11 VendorRed Hat Affected — Fixed in 1789135606 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.13 VendorRed Hat Affected — Fixed in 1789131397 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.14 VendorRed Hat Affected — Fixed in 1789136328 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.15 VendorRed Hat Affected — Fixed in 1789136327 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1789136320 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1787854416 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670243 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670912 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788105072 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788073481 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788572527 Patch available CNA
- Red Hat Advanced Cluster Management for Kubernetes 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:acm:2.11::el9 | 2.11 | — | Red Hat |
| cpe:/a:redhat:acm:2.13::el9 | 2.13 | — | Red Hat |
| cpe:/a:redhat:acm:2.14::el9 | 2.14 | — | Red Hat |
| cpe:/a:redhat:acm:2.15::el9 | 2.15 | — | Red Hat |
| cpe:/a:redhat:acm:2.16::el9 | 2.16 | — | Red Hat |
| cpe:/a:redhat:acm:2.17::el9 | 2.17 | — | Red Hat |
| cpe:/a:redhat:acm:2 | 2 | — | Red Hat |
- cpe:/a:redhat:acm:2.11::el9 Versions 2.11 — ·Red Hat
- cpe:/a:redhat:acm:2.13::el9 Versions 2.13 — ·Red Hat
- cpe:/a:redhat:acm:2.14::el9 Versions 2.14 — ·Red Hat
- cpe:/a:redhat:acm:2.15::el9 Versions 2.15 — ·Red Hat
- cpe:/a:redhat:acm:2.16::el9 Versions 2.16 — ·Red Hat
- cpe:/a:redhat:acm:2.17::el9 Versions 2.17 — ·Red Hat
- cpe:/a:redhat:acm:2 Versions 2 — ·Red Hat
Remediation
Red Hat 9 advisories
- RHSA-2026:85227 Released 2026-10-19 · Red Hat rating ImportantSubmariner v0.23 security fixes and container updates
- Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/lighthouse-agent-rhel9, registry.redhat.io/rhacm2/lighthouse-coredns-rhel9, registry.redhat.io/rhacm2/subctl-rhel9 +4
- RHSA-2026:72880 Released 2026-09-28 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.16.6 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/console-rhel9, registry.redhat.io/rhacm2/submariner-addon-rhel9
- RHSA-2026:67543 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.17.2 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.17 registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/console-rhel9, registry.redhat.io/rhacm2/grafana-dashboard-loader-rhel9 +3
Show 6 more Red Hat advisories
- RHSA-2026:67542 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.16.5 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +5
- RHSA-2026:67541 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.15.7 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.15 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +9
- RHSA-2026:67540 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.13.12 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +5
- RHSA-2026:67539 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.14.5 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.14 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +7
- RHSA-2026:67538 Released 2026-09-15 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.11.12 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.11 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/console-rhel9, registry.redhat.io/rhacm2/grafana-dashboard-loader-rhel9 +8
- RHSA-2026:63016 Released 2026-09-03 · Red Hat rating ImportantSubmariner v0.24 security fixes and container updates
- Red Hat Advanced Cluster Management for Kubernetes 2.17 registry.redhat.io/rhacm2/lighthouse-agent-rhel9, registry.redhat.io/rhacm2/lighthouse-coredns-rhel9, registry.redhat.io/rhacm2/subctl-rhel9 +4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Advanced Cluster Management for Kubernetes 2.11 and 5 more products — RHSA-2026:63016
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2026-47432 Lighthouse: lighthouse: arbitrary namespace injection via attacker-controlled broker labelPriority MEDIUM 44
- TI-2026-47431 Lighthouse: lighthouse: cross-cluster dns spoofing via unvalidated endpointslice ip addressesPriority LOW 39
- TI-2026-47429 Submariner: submariner: missing validation of remote endpoint subnets and clusterid enables cross-cluster traffic hijackPriority LOW 39
- Advisory ·
Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Advanced Cluster Management for Kubernetes 2.11 and 5 more products — RHSA-2026:85227
7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2026-47432 Lighthouse: lighthouse: arbitrary namespace injection via attacker-controlled broker labelPriority MEDIUM 44
- TI-2026-47431 Lighthouse: lighthouse: cross-cluster dns spoofing via unvalidated endpointslice ip addressesPriority LOW 39
- TI-2026-47429 Submariner: submariner: missing validation of remote endpoint subnets and clusterid enables cross-cluster traffic hijackPriority LOW 39
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Advanced Cluster Management for Kubernetes 2.11 | Fixed | RHSA-2026:67538 |
| Red Hat Advanced Cluster Management for Kubernetes 2.13 | Fixed | RHSA-2026:67540 |
| Red Hat Advanced Cluster Management for Kubernetes 2.14 | Fixed | RHSA-2026:67539 |
| Red Hat Advanced Cluster Management for Kubernetes 2.15 | Fixed | RHSA-2026:67541 |
| Red Hat Advanced Cluster Management for Kubernetes 2.16 | Fixed | RHSA-2026:67542, RHSA-2026:72880, RHSA-2026:85227 |
| Red Hat Advanced Cluster Management for Kubernetes 2.17 | Fixed | RHSA-2026:63016, RHSA-2026:67543 |
Not affected: 6 products
- Red Hat Advanced Cluster Management for Kubernetes 2.11
- Red Hat Advanced Cluster Management for Kubernetes 2.13
- Red Hat Advanced Cluster Management for Kubernetes 2.14
- Red Hat Advanced Cluster Management for Kubernetes 2.15
- Red Hat Advanced Cluster Management for Kubernetes 2.16
- Red Hat Advanced Cluster Management for Kubernetes 2.17
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66780
- 2026-10-03 Alias added: GHSA-3xmh-phwc-5f4g
- 2026-10-19 Fix available: rhacm2/subctl-rhel9@1790670243, rhacm2/submariner-rhel9-operator@1790670912 · CNA
- 2026-10-19 1 new reference · CNA
- 2026-10-20 Fix available: RHSA-2026:85227 · Red Hat
- 2026-10-20 Affected versions changed · Red Hat
References
More Red Hat vulnerabilities
- TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
- TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-66780 · CVE Program
- CVE-2026-66780 · NVD
- FIRST EPSS
- GHSA-3xmh-phwc-5f4g · GitHub Advisory Database · CC BY 4.0
- CVE-2026-66780 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences