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CVE-2025-1974 PoC — ingress-nginx admission controller RCE escalation

Source
https://github.com/projectdiscovery/nuclei-templates/blob/main/cloud/kubernetes/cves/2025/CVE-2025-1974-k8s.yaml
Associated Vulnerability
Title:ingress-nginx admission controller RCE escalation (CVE-2025-1974)
Description:A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access to the pod network can achieve arbitrary code execution in the context of the ingress-nginx controller. This can lead to disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
Description
A security issue was discovered in 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
File Snapshot

 id: CVE-2025-1974-k8s

info:
  name: Ingress-Nginx Controller - Unauthenticated Remote Code Executio

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