CVE-2026-4342

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.)

PUBLISHED Reserved 2026-03-17 | Published 2026-03-19 | Updated 2026-03-21 | Assigner kubernetes

Problem types

CWE-20 Improper Input Validation

Product status

Credits

wooseokdotkim finder

References

www.openwall.com/lists/oss-security/2026/03/19/9

github.com/kubernetes/kubernetes/issues/137893

cve.org (CVE-2026-4342)

nvd.nist.gov (CVE-2026-4342)

Download JSON