GHSA-F94Q-W3W8-CJ67 Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation

Summary A parameter order bug in internal/webhook/tenant/validation/hostnameregex.go causes the hostnameRegexHandler.OnUpdate webhook to validate the old Tenant object's AllowedHostnames.Regex instead of the new one being submitted. This allows an invalid malformed regex to bypass admission...

CVE-2026-61795 Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation

Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, hostnameRegexHandler.OnUpdate in internal/webhook/tenant/validation/hostnameregex.go reverses the new and old Tenant parameters and validates the previous AllowedHostnames.Regex instead of the submitte...