CVE-2025-15566

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

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.)

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
Kubernetes	ingress-nginx	< 1.12.5; < 1.13.1

References

https://github.com/kubernetes/kubernetes/issues/136789

Timeline

Published: Feb 6, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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