IngressNightmare refers to a set of vulnerabilities (CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, CVE-2025-1974) discovered in ingress-nginx, a popular Kubernetes ingress controller. If these vulnerabilities are exploited in combination, they could allow attackers to bypass restrictions and potentially gain unauthorized access to sensitive systems, posing significant security risks. The vulnerabilities highlight the importance of maintaining robust security practices within Kubernetes environments to prevent exploitation and protect critical infrastructure. The discovery underscores the ongoing need for vigilance and prompt updates in managing software vulnerabilities, especially in widely deployed open-source tools like ingress-nginx.