GitHub Advisoryadvisory · Go

GHSA-f53h-mxv9-cp98 ingress-nginx comment-based nginx configuration injection

HIGH Published 2026-03-20 Modified 2026-03-20 Official page ↗
Aliases
CVE-2026-4342
Ecosystem
Go
Packages
k8s.io/ingress-nginx
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-20
Reviewed
2026-03-20

Affected packages

• Go k8s.io/ingress-nginx: < 0.0.0-20260319175635-5183b7d86137 → fixed in 0.0.0-20260319175635-5183b7d86137

Description

A security issue was discovered in ingress-nginx where a combination of Ingress annotations 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.)

Related

Alias · CVE (1)

  • CVE-2026-4342 A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. vulnerability

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References