CVE-2026-1580

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.)

Score

CVSS 3.1 8.8 High

Status

Deferred - jordan@liggitt.net

Published

2026-02-03

Last modified

2026-02-26

Weaknesses

CWE-20

Affected products

• Ingress-nginx (Kubernetes)

References

• https://github.com/kubernetes/kubernetes/issues/136677