ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation

Open Source Vulnerabilities CVE-2025-1097

A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `auth-tls-match-cn` Ingress annotation can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

Open Source Vulnerabilities GO-2025-3565

ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation in k8s.io/ingress-nginx. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: k8s.io/ingress-nginx before v1.11.5, from v1.12.0-beta.0 before v1.12.1.

Open Source Vulnerabilities GHSA-823x-fv5p-h7hw

A security issue was discovered in [ingress-nginx](https://github.com/kubernetes/ingress-nginx) where the `auth-tls-match-cn` Ingress annotation can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)