CVE-2026-52865 NGINX Ingress Controller vulnerability

High 7.1 Published 15 Jul 2026 Updated 15 Jul 2026

An authenticated attacker with resource write access can crash the NGINX Ingress Controller control plane, causing a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-52865?

CVE-2026-52865 is a high-severity vulnerability in F5 NGINX Ingress Controller, published on 15 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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. There is no data plane exposure; this is a control plane issue only.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-476

Which versions are affected by CVE-2026-52865?

It affects 1 product.

Products include F5 Nginx Ingress Controller.

How do I fix CVE-2026-52865?

No fix has been published for CVE-2026-52865 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-52865 being exploited?

There is no known exploitation of CVE-2026-52865 in the wild and no public exploit code.

Sources

Also known as GHSA-gv6x-94m7-c6hh.