{"id":"ALPINE-CVE-2020-8559","details":"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.","modified":"2026-11-03T06:32:26.341573719Z","published":"2020-07-22T14:15:16.517Z","upstream":["CVE-2020-8559"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2020-8559"}],"affected":[{"package":{"name":"k3s","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}},{"package":{"name":"k3s","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/k3s?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.6.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-8559.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H"}]}