CVE-2026-66780

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

MEDIUM
6.5
CVSS Score
Published: August 18, 2026 at 05:32 PM UTC
Updated: October 19, 2026 at 05:17 PM UTC
1 product affected across 1 vendorAdvanced Cluster Management for Kubernetes

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions2
Vendor states this is fixed in 1787854416 (unaffected)
Vendor states this is fixed in 1788073481 (unaffected)
Vendor states this is fixed in 1788105072 (unaffected)
Vendor states this is fixed in 1788572527 (unaffected)
Vendor states this is fixed in 1789131397 (unaffected)
Vendor states this is fixed in 1789135606 (unaffected)
Vendor states this is fixed in 1789136320 (unaffected)
Vendor states this is fixed in 1789136327 (unaffected)
Vendor states this is fixed in 1789136328 (unaffected)
Vendor states this is fixed in 1790670243 (unaffected)
Vendor states this is fixed in 1790670912 (unaffected)

References (17)

VDB Entryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-66780
Issue Trackingx_refsource_REDHAT
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2507524
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60386
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60389
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60390
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60387
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60388
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60391

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-284CWE-532

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