{"cve":"CVE-2018-20321","nvd":{"published":"2019-04-10T14:29:00.267","modified":"2026-06-17T01:52:37.003","status":"Modified","description":"An issue was discovered in Rancher 2 through 2.1.5. Any project member with access to the default namespace can mount the netes-default service account in a pod, and then use that pod to execute administrative privileged commands against the k8s cluster. This could be mitigated by isolating the default namespace in a separate project, where only cluster admins can be given permissions to access. As of 2018-12-20, this bug affected ALL clusters created or imported by Rancher.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-668"],"references":["https://forums.rancher.com/c/announcements","https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/","https://forums.rancher.com/c/announcements","https://rancher.com/blog/2019/2019-01-29-explaining-security-vulnerabilities-addressed-in-rancher-v2-1-6-and-v2-0-11/"],"products":["suse:rancher"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2018-20321","score":0.01766,"percentile":0.78076,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9qq2-xhmc-h9qr","url":"https://osv.dev/vulnerability/GHSA-9qq2-xhmc-h9qr","summary":"Access Control Bypass","modified":"2024-08-21T15:41:59.636638Z","packages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","ranges":[">=2.0.0 <2.1.6"],"fixed":["2.1.6"]}]},{"id":"GO-2022-0644","url":"https://osv.dev/vulnerability/GO-2022-0644","summary":"Access Control Bypass in github.com/rancher/rancher","modified":"2026-03-03T04:50:48.465228Z","packages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","ranges":[">=2.0.0+incompatible <2.1.6+incompatible"],"fixed":["2.1.6+incompatible"]}]}],"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."]}