Kubernetes Ingress-nginx vulnerabilities
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Published CVEs affecting Kubernetes Ingress-nginx: 7 record(s), with affected versions and fixes.cpe:2.3:a:kubernetes:ingress-nginx
CVE-2026-4342
High · 8.8
CWE-20 Mar 19, 2026
ingress-nginx comment-based nginx configuration injection
A security issue was discovered in ingress-nginx where a combination of Ingress annotations 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.)
CVE-2026-3288
High · 8.8
CWE-20 Mar 9, 2026
ingress-nginx rewrite-target nginx configuration injection
A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/rewrite-target` 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.)
CVE-2025-15566
High · 8.8
CWE-20 Feb 6, 2026
ingress-nginx auth-proxy-set-headers nginx configuration injection
A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth-proxy-set-headers` 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.)
CVE-2026-24514
Medium · 6.5
CWE-770 Feb 3, 2026
ingress-nginx Admission Controller denial of service
A security issue was discovered in ingress-nginx where the validating admission controller feature is subject to a denial of service condition. By sending large requests to the validating admission controller, an attacker can cause memory consumption, which may result in the ingress-nginx controller pod being killed or the node running out of memory.
CVE-2026-24513
Low · 3.1
CWE-754 Feb 3, 2026
ingress-nginx auth-url protection bypass
A security issue was discovered in ingress-nginx where the protection afforded by the `auth-url` Ingress annotation may not be effective in the presence of a specific misconfiguration.
If the ingress-nginx controller is configured with a default custom-errors configuration that includes HTTP errors 401 or 403, and if the configured default custom-errors backend is defective and fails to respect the X-Code HTTP header, then an Ingress with the `auth-url` annotation may be accessed even when authentication fails.
Note that the built-in custom-errors backend works correctly. To trigger this issue requires an administrator to specifically configure ingress-nginx with a broken external component.
CVE-2026-24512
High · 8.8
CWE-20 Feb 3, 2026
ingress-nginx auth-method nginx configuration injection
A security issue was discovered in ingress-nginx where the `rules.http.paths.path` Ingress field 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.)
CVE-2026-1580
High · 8.8
CWE-20 Feb 3, 2026
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.)