{"id":4677,"date":"2026-09-04T18:46:41","date_gmt":"2026-09-04T10:46:41","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-10090"},"modified":"2026-09-04T18:46:41","modified_gmt":"2026-09-04T10:46:41","slug":"cve-2026-10090","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-10090","title":{"rendered":"CVE-2026-10090 [CRITICAL] &#8211; A flaw was found in the Application Subscription controller (multicluster-operators-subscr"},"content":{"rendered":"<p>A flaw was found in the Application Subscription controller (multicluster-operators-subscription) of Red Hat Advanced Cluster Management for Kubernetes (ACM). A user with namespace-scoped &#8220;edit&#8221; privileges in an ACM hub namespace can create a Channel resource pointing to a Helm repository they control and a Subscription resource referencing it. The app-subscription controller fetches and applies the Helm chart contents with its own elevated authority, without verifying whether the subscription creator holds the &#8220;open-cluster-management:subscription-admin&#8221; role and without restricting applied resources to the subscription namespace. This allows the attacker to include cluster-scoped resources in the Helm chart, such as a ClusterRoleBinding granting the attacker&#8217;s ServiceAccount the &#8220;cluster-admin&#8221; ClusterRole. Successful exploitation results in full cluster-admin privilege escalation. This contradicts the ACM documentation which states that non-subscription-admin users should have resources deployed into the subscription namespace only.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A flaw was found in the Application Subscription controller (multicluster-operators-subscription) of Red Hat Advanced Cluster Management for Kubernetes (ACM). A user with namespace-scoped &#8220;edit&#8221; privi<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-4677","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/4677","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4677"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}