Home/CVE/The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and t
CVE

CVE-2020-8553

The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and t

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.

MEDIUM · CVSS 5.9 EPSS 0.00523
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-610Externally Controlled Reference to a Resource in Another Sphere
CWE-73External Control of File Name or Path
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Affected Products & Versions

1
kubernetes ingress-nginx< 0.28.0
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Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go k8s.io/ingress-nginx MODERATE fixed in 0.28.0
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Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · jordan@liggitt.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Jul 2020 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/kubernetes/ingress-nginx/issues/5126Third Party Advisory
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