Bug 2567719 (CVE-2026-122320)

Summary: CVE-2026-122320 github.com/kyverno/kyverno: Kyverno: Information disclosure via cross-namespace clone policy templating
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gbenhaim, niyer, twaugh
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Kyverno. An authenticated user with permission to create namespaced policies can bypass authorization controls by templating target namespace values within clone generation rules. By triggering the background controller to copy resources from restricted namespaces into an attacker-controlled namespace, an attacker can access sensitive configuration data, leading to cross-tenant information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-11-05 22:20:35 UTC 
Kyverno before 1.19.2 contains a missing authorization vulnerability that allows namespaced Policy authors to read resources in other namespaces by templating generate.clone or cloneList namespace values. Attackers can annotate a triggering ConfigMap so the background-controller copies a victim namespace's sensitive ConfigMap into the attacker's namespace, enabling cross-tenant data disclosure.