{"schema_version":"1.8.0","id":"CVE-2021-25741","published":"2021-09-20T17:15:08.343Z","modified":"2026-08-07T15:15:18.319302Z","aliases":["GHSA-f5f7-6478-qm6p","GO-2022-0910"],"related":["CGA-w3f5-75v2-fp9f","openSUSE-SU-2025:15424-1"],"details":"A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kubernetes/kubelet","events":[{"introduced":"0"},{"last_affected":"be67f1bbc192a7d4993c16809ee6d923ce59cb2f"},{"introduced":"30b4cd52c54df86ed93459ba84b3e61877fc28ea"},{"last_affected":"200af98d7e281e6dca0d79168a52cbdc1b434957"},{"introduced":"2f96697a6b8649844ec80a9bbe6d7cde3b197f5b"},{"last_affected":"e58dbfbf5a665705736cae9c5fe2fb4895aca2ef"},{"introduced":"cb25f113ccf051d34612b05d6c04c1f892167b0c"},{"last_affected":"8f730ee1186d7f2af4af2041696c66f89c287af2"}],"database_specific":{"cpe":"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.19.14"},{"introduced":"1.20.0"},{"last_affected":"1.20.10"},{"introduced":"1.21.0"},{"last_affected":"1.21.4"},{"introduced":"1.22.0"},{"last_affected":"1.22.1"}],"source":"CPE_RANGE"}}],"versions":["v0.22.1","kubernetes-1.22.1","v0.21.4","kubernetes-1.21.4","v0.20.10","kubernetes-1.20.10","v0.19.14","kubernetes-1.19.14","kubernetes-1.9.0-alpha.3","kubernetes-1.9.0-alpha.2","kubernetes-1.9.0-alpha.1","kubernetes-1.9.0-alpha.0","kubernetes-1.13.0-alpha.0","kubernetes-1.12.0-beta.0","kubernetes-1.12.0-alpha.1","kubernetes-1.12.0-alpha.0","kubernetes-1.11.0-alpha.2","kubernetes-1.11.0-alpha.1","kubernetes-1.11.0-alpha.0","kubernetes-1.10.0-alpha.3","kubernetes-1.10.0-alpha.2","kubernetes-1.10.0-alpha.1","kubernetes-1.10.0-alpha.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25741.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/kubernetes/kubernetes","events":[{"introduced":"0"},{"last_affected":"0fd2b5afdfe3134d6e1531365fdb37dd11f54d1c"},{"introduced":"af46c47ce925f4c4ad5cc8d1fca46c7b77d13b38"},{"last_affected":"8152330a2b6ca3621196e62966ef761b8f5a61bb"},{"introduced":"cb303e613a121a29364f75cc67d3d580833a7479"},{"last_affected":"3cce4a82b44f032d0cd1a1790e6d2f5a55d20aae"},{"introduced":"c2b5237ccd9c0f1d600d3072634ca66cefdf272f"},{"last_affected":"632ed300f2c34f6d6d15ca4cef3d3c7073412212"}],"database_specific":{"cpe":"cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.19.14"},{"introduced":"1.20.0"},{"last_affected":"1.20.10"},{"introduced":"1.21.0"},{"last_affected":"1.21.4"},{"introduced":"1.22.0"},{"last_affected":"1.22.1"}],"source":"CPE_RANGE"}}],"versions":["v1.22.1","v1.21.4","v1.19.14","v1.20.10","v1.22.1-rc.0","v1.22.0","v1.21.4-rc.0","v1.20.10-rc.0","v1.19.14-rc.0","v1.21.3","v1.20.9","v1.19.13","v1.19.13-rc.0","v1.20.9-rc.0","v1.21.3-rc.0","v1.21.2","v1.20.8","v1.19.12","v1.21.2-rc.0","v1.21.1","v1.20.8-rc.0","v1.19.12-rc.0","v1.20.7","v1.19.11","v1.20.7-rc.0","v1.19.11-rc.0","v1.19.10","v1.20.6","v1.21.1-rc.0","v1.21.0","v1.20.6-rc.0","v1.19.10-rc.0","v1.20.5","v1.19.9","v1.20.5-rc.0","v1.20.4","v1.19.9-rc.0","v1.20.4-rc.0","v1.20.3","v1.19.8","v1.20.3-rc.0","v1.19.8-rc.0","v1.20.2","v1.19.7","v1.20.2-rc.0","v1.19.7-rc.0","v1.19.6","v1.20.1","v1.19.6-rc.1","v1.20.1-rc.1","v1.19.6-rc.0","v1.19.5","v1.20.1-rc.0","v1.20.0","v1.19.5-rc.0","v1.19.4","v1.19.4-rc.0","v1.19.3","v1.19.3-rc.0","v1.19.2","v1.19.2-rc.0","v1.19.1","v1.19.1-rc.0","v1.19.0","v1.19.0-rc.4","v1.19.0-rc.3","v1.19.0-rc.2","v1.19.0-rc.1","v1.19.0-rc.0","v1.20.0-alpha.0","v1.19.0-beta.2","v1.19.0-beta.1","v1.19.0-beta.0","v1.19.0-alpha.3","v1.19.0-alpha.2","v1.19.0-alpha.1","v1.19.0-alpha.0","v1.18.0-alpha.5","v1.18.0-alpha.4","v1.18.0-alpha.2","v1.18.0-alpha.1","v1.18.0-alpha.0","v1.17.0-alpha.3","v1.17.0-alpha.1","v1.17.0-alpha.2","v1.17.0-alpha.0","v1.16.0-alpha.3","v1.16.0-alpha.2","v1.16.0-alpha.1","v1.16.0-alpha.0","v1.15.0-alpha.3","v1.15.0-alpha.2","v1.15.0-alpha.1","v1.14.0-alpha.3","v1.15.0-alpha.0","v1.14.0-alpha.2","v1.14.0-alpha.1","v1.14.0-alpha.0","v1.13.0-alpha.3","v1.13.0-alpha.2","v1.13.0-alpha.1","v1.13.0-alpha.0","v1.12.0-alpha.1","v1.12.0-alpha.0","v1.11.0-alpha.2","v1.11.0-alpha.1","v1.11.0-alpha.0","v1.10.0-alpha.3","v1.10.0-alpha.2","v1.10.0-alpha.1","v1.9.0-alpha.3","v1.10.0-alpha.0","v1.9.0-alpha.2","v1.9.0-alpha.1","v1.9.0-alpha.0","v1.8.0-alpha.3","v1.8.0-alpha.2","v1.8.0-alpha.0","v1.8.0-alpha.1","v1.7.0-alpha.4","v1.7.0-alpha.3","v1.7.0-alpha.2","v1.7.0-alpha.1","v1.7.0-alpha.0","v1.6.0-alpha.3","v1.6.0-alpha.2","v1.6.0-alpha.1","v1.6.0-alpha.0","v1.5.0-alpha.2","v1.5.0-alpha.1","v1.5.0-alpha.0","v1.4.0-alpha.3","v1.4.0-alpha.1","v1.4.0-alpha.2","v1.3.0-alpha.5","v1.3.0-alpha.4","v1.3.0-alpha.3","v1.3.0-alpha.1","v1.3.0-alpha.2","v1.3.0-alpha.0","v1.2.0-alpha.8","v1.2.0-alpha.7","v1.2.0-alpha.6","v1.2.0-alpha.5","v1.2.0-alpha.4","v1.2.0-alpha.3","v1.2.0-alpha.2","v1.2.0-alpha.1","v1.1.0-alpha.1","v1.1.0-alpha.0","v0.17.0","v0.13.1-dev"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25741.json"}}],"references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211008-0006/"},{"type":"REPORT","url":"https://github.com/kubernetes/kubernetes/issues/104980"},{"type":"ARTICLE","url":"https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}