CVE-2020-8553— Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names
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I. Basic Information for CVE-2020-8553
Vulnerability Information
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Vulnerability Title
Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
文件名或路径的外部可控制
Source: NVD (National Vulnerability Database)
Vulnerability Title
Kubernetes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 Kubernetes ingress-nginx 0.28.0之前版本中存在安全漏洞。攻击者可利用该漏洞覆盖密码文件。
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 | unspecified ~ 0.28.0 | - |
II. Public POCs for CVE-2020-8553
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|---|
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- https://github.com/kubernetes/ingress-nginx/issues/5126x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2020-8553
IV. Related Vulnerabilities
Same product: ingress-nginx
- CVE-2026-4342
ingress-nginx comment-based nginx configuration injection - CVE-2026-3288
ingress-nginx rewrite-target nginx configuration injection - CVE-2025-15566
ingress-nginx auth-proxy-set-headers nginx configuration inj - CVE-2026-24514
ingress-nginx Admission Controller denial of service - CVE-2026-24513
ingress-nginx auth-url protection bypass
Same vendor: Kubernetes
- CVE-2026-3864
CSI Driver for NFS path traversal via subDir may delete unin - CVE-2026-4342
ingress-nginx comment-based nginx configuration injection - CVE-2026-3288
ingress-nginx rewrite-target nginx configuration injection - CVE-2025-15566
ingress-nginx auth-proxy-set-headers nginx configuration inj - CVE-2026-24514
ingress-nginx Admission Controller denial of service
Same weakness: CWE-73
- CVE-2026-41693
i18next-fs-backend: Path traversal via unsanitised lng/ns al - CVE-2026-44127
Local File Inclusion (LFI) and Arbitrary File Deletion - CVE-2026-7633
Totolink N300RH cstecgi.cgi setUploadSetting file inclusion - CVE-2026-42424
OpenClaw < 2026.4.8 - Local File Exfiltration via Shared Rep - CVE-2026-41177
Squidex has Blind SSRF via file:// Protocol in Restore API l
V. Comments for CVE-2020-8553
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