Bug 2514225 (CVE-2026-72508)

Summary:	CVE-2026-72508 multicloud-operators-subscription: multicloud-operators-subscription: hub and spoke ServiceAccounts bound to wildcard RBAC (//*)
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	gparvin, rhaigner
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluster Management (RHACM). This vulnerability allows a namespace-admin tenant to perform a confused-deputy attack by creating Subscription Custom Resources (CRs) that leverage a highly privileged ServiceAccount (SA). This enables the tenant to deploy arbitrary cluster-scoped resources, leading to privilege escalation and potential arbitrary code execution across the cluster.	Story Points:	---
Clone Of:		Environment:
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-08-11 17:38:23 UTC

A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluster Management (RHACM). The application-manager addon's ClusterRole grants apiGroups:* resources:* verbs:* (plus nonResourceURLs:*) and is bound to the application-manager ServiceAccount on every managed cluster via the addon framework. This wildcard RBAC is the root enabler for multiple confused-deputy attacks where a namespace-admin tenant can create Subscription CRs that deploy arbitrary cluster-scoped resources using this privileged SA. A least-privilege variant exists in addon/manifests/permission/role.yaml but is not used by default.

Upstream repo: https://github.com/stolostron/multicloud-operators-subscription
Audited commit: 48ae4defaa5b719e0664e1de7413c96029c938bc
Jira tracker: ACM-38624