CVE-2026-4342

8.8 HIGH

A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx

Published: 2026-03-19 · Last updated: 2026-05-19

Severity and scoring

CVSS: 8.8 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-20

Affected products

Vendor	Product
kubernetes	nginx_ingress_controller

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.)

Source: NVD

References

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