CVE-2026-1580: ingress-nginx auth-method nginx configuration injection
A security issue was discovered in ingress-nginx where the nginx.ingress.kubernetes.io/auth-method 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.)
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-1580?
CVE-2026-1580 has a high severity level due to the potential for arbitrary code execution.
How do I fix CVE-2026-1580?
To fix CVE-2026-1580, update to the latest version of ingress-nginx that addresses the issue.
What type of vulnerability is CVE-2026-1580?
CVE-2026-1580 is a configuration injection vulnerability affecting the NGINX ingress controller in Kubernetes.
What can attackers do exploiting CVE-2026-1580?
Attackers can exploit CVE-2026-1580 to execute arbitrary code within the context of the ingress-nginx controller.
Which versions of ingress-nginx are affected by CVE-2026-1580?
CVE-2026-1580 affects all unsupported versions of ingress-nginx that utilize the `nginx.ingress.kubernetes.io/auth-method` annotation.