CVE-2026-3288— ingress-nginx rewrite-target nginx configuration injection
Quick assessment
Affected
Kubernetes ingress-nginx
Exploitation
High exploitation probability; assess promptly
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/rewrite-target注释可被用于注入配置，可能导致在ingress-nginx控制器环境中执行任意代码和泄露Secret。
Affected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Kubernetes | ingress-nginx | < 1.13.8 |
affected |
< 1.14.4 |
affected | ||
< 1.15.0 |
affected |
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I. Basic Information for CVE-2026-3288
Vulnerability Information
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Vulnerability Title
ingress-nginx rewrite-target 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/rewrite-target` 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/rewrite-target注释可被用于注入配置，可能导致在ingress-nginx控制器环境中执行任意代码和泄露Secret。
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 ~ 1.13.8 | - |
|
II. Public POCs for CVE-2026-3288
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-3288 (1)
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V. Comments for CVE-2026-3288
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