Vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2
CVE-2026-70398
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-70398 (vdb-entry)
- RHBZ#2514228 (issue-tracking)
- RHSA-2026:60386 (vendor-advisory)
- RHSA-2026:60389 (vendor-advisory)
- RHSA-2026:60390 (vendor-advisory)
- RHSA-2026:60387 (vendor-advisory)
- RHSA-2026:60388 (vendor-advisory)
- RHSA-2026:60391 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-70398?
- CVE-2026-70398 is a critical-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 9.6/10. Published 2026-08-12.
- How severe is CVE-2026-70398?
- Critical severity. CVSS v3 base score is 9.6 out of 10.