CVE-2026-4342 — ingress-nginx comment-based nginx configuration injection

CVE-2026-4342

ingress-nginx comment-based nginx configuration injection PUBLISHED

Description (CNA)

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.)

Affected (CNA)

Vendor / product	Versions
Kubernetes / ingress-nginx	affected 0 before 1.13.9; affected 0 before 1.14.5; affected 0 before 1.15.1

CWE

CWE-20

References

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

ADP enrichment

CVE

No English description supplied.

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

CISA-ADP

No English description supplied.

No references supplied.