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...

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...

CVE-2026-62290

cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace...

CVE-2026-62290: Incorrect Authorization

cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace...