CVE-2026-41187

Summary: Calico’s apiserver fails to invoke the Delete override for DeleteCollection on tier-scoped policies (NetworkPolicy, GlobalNetworkPolicy and staged variants). This allows a user with deletecollection or wildcard verbs on tier-scoped policy resources to bulk-delete policies in tiers they w...

CVE-2026-41187 Calico Tier Authorization Bypass via DeleteCollection

Calico's apiserver wraps tier-scoped resources so that every operation runs through AuthorizeTierOperation, but the Delete override on NetworkPolicy, GlobalNetworkPolicy, and their staged variants is not invoked for DeleteCollection requests. A user holding the deletecollection verb or wildcard...