Tag: Upstream Failure

Problems where Nginx cannot successfully forward requests to backend services

ID	Title	Description	Category	Technology	Tags
CRE-2025-0051 High Impact: 9/10 Mitigation: 5/10	NGINX No Live Upstreams Available	NGINX is reporting that all backend servers in an upstream group are unavailable. This means that NGINX cannot route requests to any of its configured backend servers, resulting in client-facing errors.	Load Balancer Problems	nginx	Nginx Load Balancer Upstream Failure Connectivity