A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth-method` 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.)
History

Tue, 03 Feb 2026 22:45:00 +0000

Type Values Removed Values Added
Description A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth-method` 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.)
Title ingress-nginx auth-method nginx configuration injection
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: kubernetes

Published: 2026-02-03T22:16:47.223Z

Updated: 2026-02-03T22:16:47.223Z

Reserved: 2026-01-29T00:06:06.902Z

Link: CVE-2026-1580

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-03T23:16:06.290

Modified: 2026-02-03T23:16:06.290

Link: CVE-2026-1580

cve-icon Redhat

No data.