CVE-2026-4342

State: PUBLISHED · Published: 2026-03-19 · Updated: 2026-03-21 · Assigner: kubernetes

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.)

CWE

CWE-20 — CWE-20 Improper Input Validation

Affected

Kubernetes / ingress-nginx — v=0 <1.13.9 [affected]; v=0 <1.14.5 [affected]; v=0 <1.15.1 [affected]

CVSS

3.1 score=8.8 severity=HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/kubernetes/kubernetes/issues/137893

Source

cvelistV5-main/cves/2026/4xxx/CVE-2026-4342.json