#VU123877 Code Injection in Ingress-NGINX Controller for Kubernetes - CVE-2026-3288
Published: March 11, 2026
Vulnerability identifier: #VU123877
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-3288
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Ingress-NGINX Controller for Kubernetes
Ingress-NGINX Controller for Kubernetes
Software vendor:
Kubernetes
Kubernetes
Description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation where the "nginx.ingress.kubernetes.io/rewrite-target" Ingress annotation can be used to inject configuration into nginx. A remote user can inject and execute arbitrary code in the context of the ingress-nginx controller.
Remediation
Install updates from vendor's website.