Detections
Analytics

Ingress-NGINX Controller < 1.13.9 / 1.14.x < 1.14.5 / 1.15.x < 1.15.1 Configuration Injection

high Nessus Plugin ID 303593

Synopsis

The remote host is missing a security update.

Description

The version of Ingress-NGINX controller installed on the remote host is prior to 1.13.9, 1.14.5, or 1.15.1.
It is, therefore, affected by a configuration injection vulnerability.

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.)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Ingress-NGINX Controller 1.13.9, 1.14.5, 1.15.1, or later.

See Also

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

Plugin Details

Severity: High

ID: 303593

File Name: ingress-nginx-controller-CVE-2026-4342.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 3/25/2026

Updated: 3/25/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-4342

CVSS v3

Risk Factor: High

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:kubernetes:nginx_ingress_controller

Required KB Items: installed_sw/Kubernetes Ingress NGINX Controller

Patch Publication Date: 3/19/2026

Vulnerability Publication Date: 3/19/2026

Reference Information

CVE: CVE-2026-4342