CVE-2026-122320

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{"bugzilla": {"description": "github.com/kyverno/kyverno: Kyverno: Information disclosure via cross-namespace clone policy templating", "id": "2567719", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567719"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-639", "details": ["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.", "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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-122320", "public_date": "2026-11-05T02:25:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-122320\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-122320\nhttps://github.com/kyverno/kyverno/security/advisories/GHSA-493q-9xvg-9xf3\nhttps://www.vulncheck.com/advisories/kyverno-before-1.19.2-cross-namespace-resource-read-via-generate-clone"], "statement": "This vulnerability is rated as Important because authenticated tenants with permissions to manage local policies can breach cross-namespace isolation and access sensitive data without cluster-wide privileges. By manipulating dynamic clone specifications in policy definitions, an attacker forces the privileged background controller to duplicate external resources across tenant boundaries. Red Hat OpenShift does not ship or support Kyverno, relying instead on native platform admission controls and role-based access control to enforce multi-tenant separation.", "threat_severity": "Important"}

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