CVE-2026-3288: high-severity vulnerability in Kubernetes ingress-nginx
ingress-nginx rewrite-target nginx configuration injection
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 7.0%
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.)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Kubernetes · ingress-nginxRelated CVEs — Kubernetes ingress-nginx
In the same product, most dangerous first.
CVE-2023-5044HIGHCode injection via nginx.ingress.kubernetes.io/permanent-redirect annotationEPSS 53.7%CVE-2024-7646HIGHCVE-2024-7646EPSS 27.0%CVE-2023-5043HIGHIngress nginx annotation injection causes arbitrary command executionEPSS 2.5%CVE-2022-4886HIGHIngress-nginx `path` sanitization can be bypassed with `log_format` directiveEPSS 1.7%CVE-2026-4342HIGHingress-nginx comment-based nginx configuration injectionEPSS 1.5%CVE-2020-8553MEDIUMKubernetes ingress-nginx Compromise of auth via subset/superset namespace namesEPSS 0.9%