CVE-2026-66782

Submariner-operator: operator clusterrole grants cluster-wide create/update on all configmaps

MEDIUM
5.8
CVSS Score
Published: August 18, 2026 at 05:06 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
MEDIUM5.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A flaw was found in the Submariner operator. This vulnerability allows for the exposure of a long-lived broker service account (SA) bearer token within the Submariner Custom Resource (CR) specification. An attacker with access to the cluster's etcd database or through `kubectl get` commands could obtain this token. The possession of this token grants full control over the mesh network, enabling unauthorized management of network resources such as endpoints and secrets.

Affected

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

All versions2
Vendor states this is fixed in 1788073481 (unaffected)
Vendor states this is fixed in 1788105072 (unaffected)
Vendor states this is fixed in 1790670243 (unaffected)
Vendor states this is fixed in 1790670912 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

VDB Entryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-66782
Issue Trackingx_refsource_REDHAT
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2507527
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:63016

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

5.8MEDIUMredhat
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-312CWE-269

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