Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-71576
Red Hat Multicluster Global Hub 1.4.9 — Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N C N H L 8.5 .0029 20.1 —
AFFECTED
Product Versions Fixed
Multicluster Global Hub 1.4.9 unspecified 1788355599
Multicluster Global Hub 1.5.8 unspecified 1789515288
Multicluster Global Hub 1.6.6 unspecified 1790086176
Multicluster Global Hub 1.7.3 unspecified 1788377424
Multicluster Global Hub 1.8.2 unspecified 1788359454
Multicluster Global Hub 1.8.2 unspecified 1788359454
TIMELINE
Aug 7 Reserved by redhat
Aug 10 Published (CNA: redhat)
Sep 20 PATCH SHIPPED — CVE-2026-71576 (Red Hat Multicluster Global Hub 1.4.9). Fixed in Multicluster Global Hub 1.4.9 1788355599.
Description
A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 7, 2026 | Reserved | Reserved by redhat |
| August 10, 2026 | Published | Published (CNA: redhat) |
| September 20, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-71576 (Red Hat Multicluster Global Hub 1.4.9). Fixed in Multicluster Global Hub 1.4.9 1788355599. |
Affected
Affected products and packages — 6 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Multicluster Global Hub 1.4.9 | — | — | 1788355599 |
| Red Hat | Multicluster Global Hub 1.5.8 | — | — | 1789515288 |
| Red Hat | Multicluster Global Hub 1.6.6 | — | — | 1790086176 |
| Red Hat | Multicluster Global Hub 1.7.3 | — | — | 1788377424 |
| Red Hat | Multicluster Global Hub 1.8.2 | — | — | 1788359454 |
| Red Hat | Multicluster Global Hub 1.8.2 | — | — | 1788359454 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-71576 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 Saturday, October 3, 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.
