CVE-2026-22039
CriticalSummary
Kyverno, silnik polityk dla zespołów inżynieryjnych platform chmurowych, ma krytyczną lukę w autoryzacji w wersjach przed 1.16.3 i 1.15.3. Umożliwia ona użytkownikom z odpowiednimi uprawnieniami do tworzenia polityk w przestrzeni nazw na wykonywanie żądań API Kubernetes z tożsamością kontrolera przyjęć Kyverno, co narusza izolację przestrzeni nazw.
Risk Assessment
Luka ta pozwala na odczyt danych z innych przestrzeni nazw oraz na zapisywanie danych w skali klastra, co może prowadzić do nieautoryzowanego dostępu do wrażliwych informacji i naruszenia bezpieczeństwa całego klastra.
Recommendation
Zaleca się aktualizację do wersji 1.16.3 lub 1.15.3, które zawierają poprawkę dla tej podatności, aby zabezpieczyć system przed potencjalnymi atakami.
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Original NVD description (English source)
Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have a critical authorization boundary bypass in namespaced Kyverno Policy apiCall. The resolved `urlPath` is executed using the Kyverno admission controller ServiceAccount, with no enforcement that the request is limited to the policy’s namespace. As a result, any authenticated user with permission to create a namespaced Policy can cause Kyverno to perform Kubernetes API requests using Kyverno’s admission controller identity, targeting any API path allowed by that ServiceAccount’s RBAC. This breaks namespace isolation by enabling cross-namespace reads (for example, ConfigMaps and, where permitted, Secrets) and allows cluster-scoped or cross-namespace writes (for example, creating ClusterPolicies) by controlling the urlPath through context variable substitution. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

