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.)
PUBLISHED5.2CWE-20
ingress-nginx auth-method nginx configuration injection
Problem type
Affected products
Kubernetes
ingress-nginx
< 1.13.7 - AFFECTED
< 1.14.2 - AFFECTED
References
GitHub Security Advisories
GHSA-9h3p-52vh-959w
A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth...
https://github.com/advisories/GHSA-9h3p-52vh-959wA 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.)
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-1580Click to expand
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