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CVE-2026-1580— ingress-nginx auth-method nginx configuration injection

Quick assessment

Affected
Kubernetes ingress-nginx
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kubernetes ingress-nginx是云原生计算基金会（Cloud Native Computing Foundation）开源的Kubernetes 的入口控制器，使用NGINX作为反向代理和负载均衡器。 Kubernetes ingress-nginx存在安全漏洞，该漏洞源于nginx.ingress.kubernetes.io/auth-method注释可用于向nginx注入配置，可能导致在ingress-nginx控制器环境中执行任意代码并泄露控制器可访问的密钥。

CVSS 8.8 · High EPSS 0.54% · P43

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-1580

Vulnerability Information
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Vulnerability Title
ingress-nginx auth-method nginx configuration injection
Source: CVE Program / CVE List V5
Vulnerability Description
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. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kubernetes ingress-nginx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes ingress-nginx是云原生计算基金会（Cloud Native Computing Foundation）开源的Kubernetes 的入口控制器，使用NGINX作为反向代理和负载均衡器。 Kubernetes ingress-nginx存在安全漏洞，该漏洞源于nginx.ingress.kubernetes.io/auth-method注释可用于向nginx注入配置，可能导致在ingress-nginx控制器环境中执行任意代码并泄露控制器可访问的密钥。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kubernetes ingress-nginx 0 ~ 1.13.7 -

II. Public POCs for CVE-2026-1580

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III. Intelligence Information for CVE-2026-1580

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Patches & Fixes for CVE-2026-1580 (1)

Same Patch Batch · Kubernetes · 2026-02-03 · 4 CVEs total

CVE-2026-24512 8.8 HIGH ingress-nginx auth-method nginx configuration injection
CVE-2026-24514 6.5 MEDIUM ingress-nginx Admission Controller denial of service
CVE-2026-24513 3.1 LOW ingress-nginx auth-url protection bypass

IV. Related Vulnerabilities

Same product: ingress-nginx
Same vendor: Kubernetes
Same weakness: CWE-20

V. Comments for CVE-2026-1580

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