What is CVE-2025-15566?

CVE-2025-15566 is a high-severity vulnerability in Kubernetes Ingress-nginx, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-02-06.

How severe is CVE-2025-15566?

High severity. CVSS v3 base score is 8.8 out of 10.

Improper input validation in Kubernetes Ingress-nginx

CVE-2025-15566

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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (16.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Kubernetes Ingress-nginx — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/kubernetes/kubernetes/issues/136789

Frequently asked questions

What is CVE-2025-15566?: CVE-2025-15566 is a high-severity vulnerability in Kubernetes Ingress-nginx, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-02-06.
How severe is CVE-2025-15566?: High severity. CVSS v3 base score is 8.8 out of 10.