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-2026-70398

CVE-2026-70398CRITICAL

Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 — Multicloud-integrations: multicloud-integrations: gitopscluster.spec.argoserver.argonamespace writes spoke bearer tokens to attacker-chosen namespace

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  N    9.6   .0052   42.2     —

AFFECTED
  Product                                                  Versions     Fixed
  Red Hat Advanced Cluster Management for Kubernetes 2.11  unspecified  1787260689
  Red Hat Advanced Cluster Management for Kubernetes 2.13  unspecified  1787259106
  Red Hat Advanced Cluster Management for Kubernetes 2.14  unspecified  1787183407
  Red Hat Advanced Cluster Management for Kubernetes 2.15  unspecified  1787238604
  Red Hat Advanced Cluster Management for Kubernetes 2.16  unspecified  1787252179
  Red Hat Advanced Cluster Management for Kubernetes 2.17  unspecified  1787243221

TIMELINE
  Aug 11  Reserved by redhat
  Aug 12  Published (CNA: redhat)
  Aug 26  PATCH SHIPPED — CVE-2026-70398 (Red Hat Advanced Cluster Management for Kubernetes 2.11). Fixed in Red Hat Advanced Cluster Management for Kubernetes 2.11 1787260689.

CWE-441 · CNA: redhat · CVSS v3.1 · 8 references · NVD status: Awaiting Analysis

Description

A flaw was found in multicloud-integrations, a component of Red Hat Advanced Cluster Management (RHACM). This vulnerability allows an authenticated user, referred to as a tenant, to manipulate the GitOpsCluster controller. By exploiting this, a tenant can redirect sensitive spoke cluster bearer tokens from secure locations to a namespace they control. This unauthorized access to tokens can lead to the disclosure of critical information and bypass security policies within ArgoCD AppProjects.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 11, 2026	Reserved	Reserved by redhat
August 12, 2026	Published	Published (CNA: redhat)
August 26, 2026	PATCH SHIPPED	PATCH SHIPPED — CVE-2026-70398 (Red Hat Advanced Cluster Management for Kubernetes 2.11). Fixed in Red Hat Advanced Cluster Management for Kubernetes 2.11 1787260689.

Affected

Affected products and packages — 6 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.11	—	—	1787260689
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.13	—	—	1787259106
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.14	—	—	1787183407
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.15	—	—	1787238604
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.16	—	—	1787252179
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.17	—	—	1787243221

Weaknesses

CWE-441

References (8)

https://access.redhat.com/errata/RHSA-2026:60386 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/errata/RHSA-2026:60387 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/errata/RHSA-2026:60388 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/errata/RHSA-2026:60389 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/errata/RHSA-2026:60390 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/errata/RHSA-2026:60391 [vendor-advisory, x_refsource_REDHAT]
https://access.redhat.com/security/cve/CVE-2026-70398 [vdb-entry, x_refsource_REDHAT]
https://bugzilla.redhat.com/show_bug.cgi?id=2514228 [issue-tracking, x_refsource_REDHAT]

Authoritative record: CVE-2026-70398 at cve.org

Vendors: red hat

Weaknesses: CWE-441

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-70398 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.