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. 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.)

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/kubernetes/kubernetes/issues/137893	Issue Tracking
http://www.openwall.com/lists/oss-security/2026/03/19/9	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:kubernetes:nginx_ingress_controller::::::::
	cpe:2.3:a:kubernetes:nginx_ingress_controller::::::::
	cpe:2.3:a:kubernetes:nginx_ingress_controller:1.15.0:::::::*

History

No history.

Information

Published : 2026-03-19 22:16

Updated : 2026-06-17 10:56

NVD link : CVE-2026-4342

Mitre link : CVE-2026-4342

CVE.ORG link : CVE-2026-4342

JSON object : View

Products Affected

kubernetes

nginx_ingress_controller

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

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