PT-2026-6404 · Go · K8S.Io/Ingress-Nginx

Published 2026-02-04 · Updated 2026-02-04

OSV

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.)

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

GHSA-9H3P-52VH-959W

Affected Products

K8S.Io/Ingress-Nginx

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-1580 · Security Note
• https://osv.dev/vulnerability/GHSA-9h3p-52vh-959w · Vendor Advisory
• https://github.com/kubernetes/kubernetes/issues/136677 · Note
• https://github.com/kubernetes/ingress-nginx · Note