A security issue was discovered in ingress-nginx where the nginx.ingress.kubernetes.io/auth-proxy-set-headers Ingress annotation can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/15xxx/CVE-2025-15566.json",
"cna_assigner": "kubernetes",
"cwe_ids": [
"CWE-20"
]
}