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Vulnerability · Published Aug 12, 2026 · Assigned by redhat

CVE-2026-70398Multicloud-integrations: multicloud-integrations: gitopscluster.spec.argoserver.argonamespace writes spoke bearer tokens to attacker-chosen namespace

Critical 9.6

In plain English

A critical-severity security flaw in Red Hat Advanced Cluster Management for Kubernetes 2.11 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.5%top 55.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 see references
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 see references
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 see references
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 see references
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16 see references
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 see references

Weakness: CWE-441 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References