{"id":"GO-2021-0077","summary":"Authentication bypass in go.etcd.io/etcd","details":"A user can use a valid client certificate that contains a CommonName that matches a valid RBAC username to authenticate themselves as that user, despite lacking the required credentials. This may allow authentication bypass, but requires a certificate that is issued by a CA trusted by the server.","aliases":["CVE-2018-16886","GHSA-h6xx-pmxh-3wgp"],"modified":"2026-03-17T04:05:43.590174Z","published":"2021-04-14T20:04:52Z","related":["CGA-7rj7-px9h-mv37"],"database_specific":{"review_status":"REVIEWED","url":"https://pkg.go.dev/vuln/GO-2021-0077"},"references":[{"type":"FIX","url":"https://github.com/etcd-io/etcd/pull/10366"},{"type":"FIX","url":"https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2"}],"affected":[{"package":{"name":"go.etcd.io/etcd","ecosystem":"Go","purl":"pkg:golang/go.etcd.io/etcd"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.0-alpha.5.0.20190108173120-83c051b701d3"}]}],"ecosystem_specific":{"imports":[{"symbols":["authStore.AuthInfoFromTLS"],"path":"go.etcd.io/etcd/auth"}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2021-0077.json"}}],"schema_version":"1.7.5"}