{"id":"CVE-2020-8559","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-8559","generatedAt":"2026-10-27T23:42:47.279Z","title":"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…","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.","published":"2020-07-22T14:15:17.000Z","lastModified":"2026-06-17T03:26:33.000Z","status":"Modified","sourceIdentifier":"jordan@liggitt.net","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-601"],"affected":["kubernetes/kubernetes"],"epss":{"score":0.061,"percentile":0.93374,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (6.10%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/kubernetes/kubernetes/issues/92914","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ","tags":["Exploit","Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://security.netapp.com/advisory/ntap-20200810-0004/","tags":["Third Party Advisory"],"source":"jordan@liggitt.net"},{"url":"https://github.com/kubernetes/kubernetes/issues/92914","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20200810-0004/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-8559","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}