CVE-2026-70398
Auth tenant can exfiltrate spoke cluster tokens via RHACM GitOpsCluster controller.
Is CVE-2026-70398 being exploited?
Not confirmed. CVE-2026-70398 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-70398?
CVE-2026-70398 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-70398?
Yes. A fix has been recorded for CVE-2026-70398. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-70398 affect?
CVE-2026-70398 affects Red Hat Advanced Cluster Management (multicloud-integrations), ArgoCD (AppProjects integrations), Spoke Kubernetes clusters (bearer tokens). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-70398?
Apply vendor patch when released; meanwhile restrict tenant permissions and rotate affected tokens.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated tenant can redirect/exfiltrate spoke cluster bearer tokens to a tenant namespace, enabling token theft, cluster access and ArgoCD policy bypass.
Immediate action required