When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remote attacker with permission…

In plain English

When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remote attacker with permission to create or modify Ingress or TransportServer resources can cause the NGINX Ingress Controller process to terminate. Impact: The NGINX Ingress Controller control plane process terminates and enters a persistent crash loop while the malformed Ingress or TransportServer resource remains in the cluster. This vulnerability allows a remote, authenticated attacker with at least Ingress or TransportServer resource write access to cause a denial-of-service (DoS) on the NGINX Ingress Controller system. The official description indicates that an attacker needs authenticated access or valid credentials first.

Vulnerable items

• NGINX Ingress Controller — NGINX Ingress Controller is a F5 management component used to administer connected systems or services.

Recommended action

Primary action: update to a vendor-listed fixed release: 5.5.2, 2026-lts-r3.