{"id":"CVE-2021-25320","aliases":["GHSA-gqf8-rvrh-g7w6","GO-2026-4589"],"url":"https://o3.security/vulnerability/CVE-2021-25320","summary":"Rancher cloud credentials can be used through proxy API by users without access","details":"A Improper Access Control vulnerability in Rancher, allows users in the cluster to make request to cloud providers by creating requests with the cloud-credential ID. Rancher in this case would attach the requested credentials without further checks This issue affects: Rancher versions prior to 2.5.9; Rancher versions prior to 2.4.16.","published":"2021-07-15T09:15:08.143Z","modified":"2026-08-07T15:15:13.056589Z","cvss":{"score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.00848,"percentile":0.56388,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.4.16"},{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.5.9"}],"fix":null,"references":[{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1185514"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:15:13.056589Z"}}