{"schema_version":"1.9.0","id":"GHSA-gqf8-rvrh-g7w6","published":"2026-03-03T14:52:15Z","modified":"2026-09-10T03:50:39.311946003Z","aliases":["CVE-2021-25320","GO-2026-4589"],"summary":"Rancher cloud credentials can be used through proxy API by users without access","details":"A vulnerability was discovered in Rancher 2.2.0 through the aforementioned patched versions, where cloud credentials weren't being properly validated through the Rancher API. Specifically through a proxy designed to communicate with cloud providers. Any Rancher user that was logged-in and aware of a cloud-credential ID that was valid for a given cloud provider, could call that cloud provider's API through the proxy API, and the cloud-credential would be attached. The exploit is limited to valid Rancher users. There is not a direct mitigation outside of upgrading to the patched Rancher versions.","affected":[{"package":{"name":"github.com/rancher/rancher","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/rancher"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.2.0"},{"fixed":"2.4.16"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-gqf8-rvrh-g7w6/GHSA-gqf8-rvrh-g7w6.json"}},{"package":{"name":"github.com/rancher/rancher","ecosystem":"Go","purl":"pkg:golang/github.com/rancher/rancher"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.5.0"},{"fixed":"2.5.9"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-gqf8-rvrh-g7w6/GHSA-gqf8-rvrh-g7w6.json"}}],"references":[{"type":"WEB","url":"https://github.com/rancher/rancher/security/advisories/GHSA-gqf8-rvrh-g7w6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25320"},{"type":"WEB","url":"https://bugzilla.suse.com/show_bug.cgi?id=1185514"},{"type":"PACKAGE","url":"https://github.com/rancher/rancher"}],"database_specific":{"cwe_ids":["CWE-284"],"github_reviewed":true,"github_reviewed_at":"2026-03-03T14:52:15Z","nvd_published_at":"2021-07-15T09:15:00Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}