{"action":"Upgrade docker to 20.10.3-r0 or later.","affected":[{"fixed":"20.10.3-r0","introduced":"20.0.0"}],"component":"docker","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.19","exploited":false,"fixed_versions":["20.10.3-r0"],"id":"tcs_01M6GN7EY5XHYC0R20ASSPA894","modified_at":"2026-11-03T06:32:27.244635849Z","published_at":"2021-02-02T18:15:11.827Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-21284","https://security.alpinelinux.org/vuln/CVE-2021-21284"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-21284#Alpine:v3.19/docker","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-21284"}],"summary":"In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using \"--userns-"}