Critical [CVE-2026-70398] GitOpsCluster.spec.argoServer.argoNamespace writes spoke bearer tokens to attacker-chosen namespace
This critical-severity Red Hat Linux advisory covers CVE-2026-70398 affecting Red Hat Advanced Cluster Management for Kubernetes 2.
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Summary
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.
This is due to the GitOpsCluster controller writing secrets to an attacker-chosen namespace, bypassing existing security guards, leading to privilege escalation and circumvention of ArgoCD AppProject constraints. Red Hat severity: Critical — CVSS 9.6 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).
Weakness: CWE-441. Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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