CVE-2026-3288
High
Description
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.)
SeverityHigh
CVSS8.8
Exploit probability—
ProductKubernetes Ingress-nginx
PublishedMar 9, 2026
First seenMar 9, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- kubernetes ingress-nginx1.13.8, 1.14.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kubernetes ingress-nginx | v < 1.13.8, 1.14.0 ≤ v < 1.14.4 | 1.13.8, 1.14.4 |
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