Ingress-NGINX Controller < 1.13.7 / 1.14.x < 1.14.3 Multiple Vulnerabilities

high Nessus Plugin ID 297852

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Synopsis

The remote host is missing one or more security updates.

Description

The version of Ingress-NGINX controller installed on the remote host is prior to 1.13.7 or 1.14.3. It is, therefore, affected by multiple vulnerabilities:

- A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth-method` Ingress annotation 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. (CVE-2026-1580)

- A security issue was discovered in ingress-nginx where the `rules.http.paths.path` Ingress field 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. (CVE-2026-24512)

- A security issue was discovered in ingress-nginx where the protection afforded by the `auth-url` Ingress annotation may not be effective in the presence of a specific misconfiguration. (CVE-2026-24513)

- A security issue was discovered in ingress-nginx where the validating admission controller feature is subject to a denial of service condition. By sending large requests to the validating admission controller, an attacker can cause memory consumption, which may result in the ingress-nginx controller pod being killed or the node running out of memory. (CVE-2026-24514)

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

Solution

Upgrade to Ingress-NGINX Controller 1.13.7, 1.14.3, or later.

Plugin Details

Severity: High

ID: 297852

File Name: ingress-nginx-controller-CVE-2026-1580.nasl

Version: 1.4

Type: local

Agent: unix

Family: Misc.

Published: 2/4/2026

Updated: 2/20/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-1580

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-24512

Vulnerability Information

CPE: cpe:/a:kubernetes:nginx_ingress_controller

Required KB Items: installed_sw/Kubernetes Ingress NGINX Controller

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/3/2026

Vulnerability Publication Date: 2/3/2026

Reference Information

CVE: CVE-2026-1580, CVE-2026-24512, CVE-2026-24513, CVE-2026-24514

IAVA: 2026-A-0104

Detections

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