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Fencer Vulns
medium 6.5

CVE-2026-66780 json

Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity

published 2026-08-18 2 mo ago modified 2026-10-19 20 d ago also EUVD-2026-61078

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

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.

Patch / fix

  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 1789135606
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 1789131397
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 1789136328
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 1789136327
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16 1787854416, 1789136320, 1790670243, 1790670912
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 1788073481, 1788105072, 1788572527

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-66780 updated cvss 6.5

submariner-operator: Broker ServiceAccount Secret (token + CA) logged in full at TRACE verbosity

  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/submariner-operator-bundle
    affected: workaround, no fix available
  • Red Hat Advanced Cluster Management for Kubernetes 2.11 rhacm2/submariner-addon-rhel9 1789135606
    fixed: vendor fix RHSA-2026:67538
  • Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2/submariner-addon-rhel9 1789131397
    fixed: vendor fix RHSA-2026:67540
  • Red Hat Advanced Cluster Management for Kubernetes 2.14 rhacm2/submariner-addon-rhel9 1789136328
    fixed: vendor fix RHSA-2026:67539
  • Red Hat Advanced Cluster Management for Kubernetes 2.15 rhacm2/submariner-addon-rhel9 1789136327
    fixed: vendor fix RHSA-2026:67541
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 rhacm2/subctl-rhel9 1790670243, rhacm2/submariner-addon-rhel9 1787854416, rhacm2/submariner-addon-rhel9 1789136320, rhacm2/submariner-rhel9-operator 1790670912
    fixed: vendor fix RHSA-2026:85227
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 rhacm2/subctl-rhel9 1788105072, rhacm2/submariner-addon-rhel9 1788572527, rhacm2/submariner-rhel9-operator 1788073481
    fixed: vendor fix RHSA-2026:63016
  • Red Hat Advanced Cluster Management for Kubernetes 2.11 rhacm2/thanos-rhel9 1788558581, rhacm2/console-rhel9 1788880484, rhacm2/prometheus-rhel9 1788951176, rhacm2/acm-grafana-rhel9 1788559869, rhacm2/acm-search-v2-rhel9 1788987820, rhacm2/node-exporter-rhel9 1788880100, +34 more Red Hat Advanced Cluster Management for Kubernetes 2.13 rhacm2/thanos-rhel9 1789136147, rhacm2/acm-cli-rhel9 1788560311, rhacm2/console-rhel9 1788972841, rhacm2/prometheus-rhel9 1788952534, rhacm2/acm-grafana-rhel9 1788954486, rhacm2/acm-search-v2-rhel9 1788987824, +37 more Red Hat Advanced Cluster Management for Kubernetes 2.14 rhacm2/thanos-rhel9 1789135282, rhacm2/acm-cli-rhel9 1788562158, rhacm2/console-rhel9 1788563615, rhacm2/prometheus-rhel9 1788941108, rhacm2/acm-grafana-rhel9 1788956632, rhacm2/acm-search-v2-rhel9 1788986409, +37 more Red Hat Advanced Cluster Management for Kubernetes 2.15 rhacm2/thanos-rhel9 1788942355, rhacm2/acm-cli-rhel9 1788894643, rhacm2/console-rhel9 1788564023, rhacm2/prometheus-rhel9 1788943695, rhacm2/acm-grafana-rhel9 1788955233, rhacm2/acm-search-v2-rhel9 1788985829, +39 more Red Hat Advanced Cluster Management for Kubernetes 2.16 rhacm2/thanos-rhel9 1787960451, rhacm2/thanos-rhel9 1788946739, rhacm2/acm-cli-rhel9 1788271321, rhacm2/acm-cli-rhel9 1788565829, rhacm2/console-rhel9 1788283612, rhacm2/console-rhel9 1788880980, +93 more Red Hat Advanced Cluster Management for Kubernetes 2.17 rhacm2/thanos-rhel9 1789141821, rhacm2/acm-cli-rhel9 1788568151, rhacm2/console-rhel9 1788883472, rhacm2/nettest-rhel9 1788166791, rhacm2/prometheus-rhel9 1788942592, rhacm2/acm-grafana-rhel9 1788967047, +46 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2

Classification

Weakness
  • CWE-532 Insertion of Sensitive Information into Log File

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.