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CVE-2018-1002102
Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints
Low2.6EPSS 0.62%
- Published
- Updated
- Reserved
- Assigned by
- kubernetes
Description
Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| kubernetesCNA (assigner) | 3.1 | Low2.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N |
| NVDNVD · Modified | 3.1 | Low2.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
- affected v1.14 – < v1.14.0
What to do
Workaround: For Kubernetes versions >= v1.10.0, the ValidateProxyRedirects feature can be manually enabled with the kube-apiserver flag --feature-gates=ValidateProxyRedirects=true
References (2)
- https://github.com/kubernetes/kubernetes/issues/85867 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2020-943f4b03d2 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-1002102)Record last updated .