GHSA-8RVJ-MM4H-C258 cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials

Summary Challenge resources under acme.cert-manager.io can be created directly by namespace users. On create, cert-manager performs no admission validation tying the Challenge to an Order, an owner reference, or an Issuer-selected solver. The ACME Challenge controller then reconciles the direct...