Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kubernetes | ingress-nginx | < 1.13.7, < 1.14.3 | 1.13.7 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260205T172317-150000.1.146.1 | SUSE-SU-2026:0403-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | ingress-nginx-controller-1.12 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | k8s.io/ingress-nginx | < 1.13.7 | 1.13.7 | GHSA-9h3p-52vh-959w |
| Go | k8s.io/ingress-nginx | >= 1.14.0, < 1.14.3 | 1.14.3 | GHSA-9h3p-52vh-959w |
| Go | k8s.io/ingress-nginx | all versions | — | GO-2026-4423 |
Advisories 3
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2026:0403-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2026-0289 Kubernetes (ingress-nginx): Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 8, 2026