{"cve":"CVE-2020-8559","nvd":{"published":"2020-07-22T14:15:16.517","modified":"2026-06-17T03:26:33.127","status":"Modified","description":"The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","score":6.8},"cwes":["CWE-601"],"references":["https://github.com/kubernetes/kubernetes/issues/92914","https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ","https://security.netapp.com/advisory/ntap-20200810-0004/","https://github.com/kubernetes/kubernetes/issues/92914","https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ"],"products":["kubernetes:kubernetes"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-8559","score":0.061,"percentile":0.93425,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-33c5-9fx5-fvjm","url":"https://osv.dev/vulnerability/GHSA-33c5-9fx5-fvjm","summary":"Privilege Escalation in Kubernetes","modified":"2026-09-10T03:50:10.993460921Z","packages":[{"ecosystem":"Go","name":"k8s.io/apimachinery","purl":"pkg:golang/k8s.io/apimachinery","ranges":["<0.16.13"],"fixed":["0.16.13"]},{"ecosystem":"Go","name":"k8s.io/apimachinery","purl":"pkg:golang/k8s.io/apimachinery","ranges":[">=0.17.0 <0.17.9"],"fixed":["0.17.9"]},{"ecosystem":"Go","name":"k8s.io/apimachinery","purl":"pkg:golang/k8s.io/apimachinery","ranges":[">=0.18.0 <0.18.7"],"fixed":["0.18.7"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":["<1.16.13"],"fixed":["1.16.13"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.17.0 <1.17.9"],"fixed":["1.17.9"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":[">=1.18.0 <1.18.7"],"fixed":["1.18.7"]}]},{"id":"GO-2024-2748","url":"https://osv.dev/vulnerability/GO-2024-2748","summary":"Privilege Escalation in Kubernetes in k8s.io/apimachinery","modified":"2026-02-04T03:58:08.676647Z","packages":[{"ecosystem":"Go","name":"k8s.io/apimachinery","purl":"pkg:golang/k8s.io/apimachinery","ranges":["<0.16.13",">=0.17.0 <0.17.9",">=0.18.0 <0.18.7-rc.0"],"fixed":["0.16.13","0.17.9","0.18.7-rc.0"]},{"ecosystem":"Go","name":"k8s.io/kubernetes","purl":"pkg:golang/k8s.io/kubernetes","ranges":["<1.16.13",">=1.17.0 <1.17.9",">=1.18.0 <1.18.7"],"fixed":["1.16.13","1.17.9","1.18.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}