CRITICAL 9.4 NVD
CVE-2026-122313
Kyverno from 1.17.0 before 1.19.2 contains a privilege escalation vulnerability that allows namespace-scoped tenants to modify resources in other namespaces thr
Kyverno from 1.17.0 before 1.19.2 contains a privilege escalation vulnerability that allows namespace-scoped tenants to modify resources in other namespaces through NamespacedMutatingPolicy targetMatchConstraints.expression CEL output lacking namespace checks. Attackers can emit a literal target such as another tenant's RoleBinding, which the cluster-wide background controller then mutates to add attacker subjects or alter Roles, NetworkPolicies, and ConfigMaps.
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-f96w-622v-rqpq
- https://www.vulncheck.com/advisories/kyverno-1.17.0-before-1.19.2-cross-namespace-privileg
This critical severity vulnerability with a CVSS score of 9.4 was published on 2026-11-05 via NVD.
Risk Timeline
CVE Disclosed2026-11-05 · -1 days ago
Remediation Resources
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