Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-66782
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 — Submariner-operator: operator clusterrole grants cluster-wide create/update on all configmaps
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H H N C N H N 5.8 .0036 27.9 —
AFFECTED
Product Versions Fixed
Red Hat Advanced Cluster Management for Kubernetes 2.17 unspecified 1788105072
Red Hat Advanced Cluster Management for Kubernetes 2.17 unspecified 1788073481
Red Hat Advanced Cluster Management for Kubernetes 2 unspecified —
Red Hat Advanced Cluster Management for Kubernetes 2 unspecified —
TIMELINE
Jul 27 Reserved by redhat
Aug 18 Published (CNA: redhat)
Sep 1 RESCORED — CVE-2026-66782 (Red Hat Advanced Cluster Management for Kubernetes 2). CVSS 7.8 → 5.8 (NVD).
Sep 2 PATCH SHIPPED — CVE-2026-66782 (Red Hat Advanced Cluster Management for Kubernetes 2.17). Fixed in Red Hat Advanced Cluster Management for Kubernetes 2.17 1788105072.
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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| July 27, 2026 | Reserved | Reserved by redhat |
| August 18, 2026 | Published | Published (CNA: redhat) |
| September 1, 2026 | RESCORED | RESCORED — CVE-2026-66782 (Red Hat Advanced Cluster Management for Kubernetes 2). CVSS 7.8 → 5.8 (NVD). |
| September 2, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-66782 (Red Hat Advanced Cluster Management for Kubernetes 2.17). Fixed in Red Hat Advanced Cluster Management for Kubernetes 2.17 1788105072. |
Affected
Affected products and packages — 4 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | — | 1788105072 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | — | 1788073481 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | — | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-66782 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
