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

Quick assessment

Affected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Redhat Advanced Cluster Management是美国Redhat公司的一款集中式的 Kubernetes 集群管理平台。 Redhat Advanced Cluster Management存在服务端请求伪造漏洞，该漏洞源于已验证用户可操纵GitOpsCluster控制器，将敏感的spoke集群bearer令牌从安全位置重定向到其控制的命名空间，导致关键信息泄露并绕过ArgoCD AppProjects的安全策略。

CVSS 9.6 · Critical EPSS 0.52% · P42
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I. Basic Information for CVE-2026-70398

Vulnerability Information
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Vulnerability Title
Multicloud-integrations: multicloud-integrations: gitopscluster.spec.argoserver.argonamespace writes spoke bearer tokens to attacker-chosen namespace
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
Redhat Advanced Cluster Management 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Redhat Advanced Cluster Management是美国Redhat公司的一款集中式的 Kubernetes 集群管理平台。 Redhat Advanced Cluster Management存在服务端请求伪造漏洞，该漏洞源于已验证用户可操纵GitOpsCluster控制器，将敏感的spoke集群bearer令牌从安全位置重定向到其控制的命名空间，导致关键信息泄露并绕过ArgoCD AppProjects的安全策略。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 1787260689 ~ * cpe:/a:redhat:acm:2.11::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 1787259106 ~ * cpe:/a:redhat:acm:2.13::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 1787183407 ~ * cpe:/a:redhat:acm:2.14::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 1787238604 ~ * cpe:/a:redhat:acm:2.15::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16 1787252179 ~ * cpe:/a:redhat:acm:2.16::el9
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 1787243221 ~ * cpe:/a:redhat:acm:2.17::el9

II. Public POCs for CVE-2026-70398

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III. Intelligence Information for CVE-2026-70398

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Vendor Advisories for CVE-2026-70398 (7)

Same Patch Batch · Red Hat · 2026-08-12 · 19 CVEs total

CVE-2026-72526 9.9 CRITICAL Multicloud-integrations: multicloud-integrations: pull-model propagation allows hub tenant
CVE-2026-72508 9.9 CRITICAL Multicloud-operators-subscription: multicloud-operators-subscription: hub and spoke servic
CVE-2026-73269 9.9 CRITICAL Cluster-curator-controller: cluster-curator-controller: tenant-controllable trigger create
CVE-2026-73268 9.9 CRITICAL Cluster-curator-controller: cluster-curator-controller: spec.install.overridejob allows ar
CVE-2026-71471 9.0 CRITICAL Acm-search-v2-rhel9: search-v2-operator: hub search cr collector.imageoverride propagated
CVE-2026-13622 8.8 HIGH Kubevirt: virt-handler-rhel9: kubevirt: virt-handler migration proxy follows symlinks allo
CVE-2026-71473 8.5 HIGH Acm-search-v2-rhel9: search-v2-operator: addonfactory.getvaluesfromaddonannotation enables
CVE-2026-66878 7.7 HIGH Multicloud-operators-subscription: multicloud-operators-subscription: fetchchannelreferenc
CVE-2026-73122 7.7 HIGH Multicloud-operators-channel: multicloud-operators-channel: auto-generated role grants eve
CVE-2026-19654 7.5 HIGH Rsyslog: a configuration-dependent issue in rsyslog's optional imptcp input module can all
CVE-2026-71469 7.5 HIGH Acm-search-v2-api-rhel9: search-v2-api: unbounded tokenreviews cache allows unauthenticate
CVE-2026-18726 6.5 MEDIUM Open-iscsi: open-iscsi: denial of service in iscsiuio router advertisement parsing
CVE-2026-18727 6.5 MEDIUM Open-iscsi: open-iscsi: integer underflow in iscsiuio dhcpv6 parsing
CVE-2026-71846 6.5 MEDIUM Insights-client: insights-client: clusterrole grants cluster-wide secrets get/list/watch b
CVE-2026-64927 6.4 MEDIUM Multicloud-operators-channel: multicloud-operators-channel: cross-namespace secret and con
CVE-2026-18663 5.9 MEDIUM 389-ds-base: 389-ds-base: pre-authentication double-free in get_ldapmessage_controls_ext()
CVE-2026-19130 5.8 MEDIUM Provider-credential-controller: provider-credential-controller: cross-namespace credential
CVE-2026-19548 5.5 MEDIUM Binutils: binutils: multiple use-after-free in add_archive_element via lto plugin processi

IV. Related Vulnerabilities

Same product: Red Hat Advanced Cluster Management for Kubernetes 2.11
Same vendor: Red Hat
Same weakness: CWE-441

V. Comments for CVE-2026-70398

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