{"id":"CVE-2018-1099","aliases":["DEBIAN-CVE-2018-1099","EUVD-2022-1226","GHSA-wf43-55jj-vwq8","UBUNTU-CVE-2018-1099"],"status":"published","title":"DNS Rebinding in etcd","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00495,"percentile":0.42765,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-350"],"published":"2018-04-03T16:00:00Z","modified":"2026-10-23T18:03:35Z","fixes":[{"ecosystem":"Go","package":"go.etcd.io/etcd","fixed_in":["3.4.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"etcd","fixed_in":["3.4.23-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"etcd","fixed_in":["3.4.23-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"etcd","fixed_in":["3.4.23-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"go.etcd.io/etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.23-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.23-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.23-1"}]}]},{"source":"osv","ecosystem":"Go","package":"go.etcd.io/etcd","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.4.0"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0+dfsg-2","2.2.1+dfsg-1","2.2.2+dfsg-1","2.2.2+dfsg-2","2.2.3+dfsg-1","2.2.5+dfsg-1","2.2.5+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.0-1","3.2.9+dfsg-2","3.2.9+dfsg-3","3.2.17+dfsg-1","3.2.17+dfsg-1ubuntu0.1~esm1","3.2.17+dfsg-1ubuntu0.1","3.2.17+dfsg-1ubuntu0.1+esm1","3.2.17+dfsg-1ubuntu0.1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.26+dfsg-3","3.2.26+dfsg-4","3.2.26+dfsg-6","3.2.26+dfsg-6ubuntu0.1","3.2.26+dfsg-6ubuntu0.2","3.2.26+dfsg-6ubuntu0.2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.25+dfsg-6","3.3.25+dfsg-7","3.3.25+dfsg-7ubuntu0.22.04.1","3.3.25+dfsg-7ubuntu0.22.04.1+esm1","3.3.25+dfsg-7ubuntu0.22.04.2","3.3.25+dfsg-7ubuntu0.22.04.2+esm1","3.3.25+dfsg-7ubuntu0.22.04.2+esm2","3.3.25+dfsg-7ubuntu0.22.04.2+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.23-4ubuntu2","3.4.30-1","3.4.30-1build1","3.4.30-1ubuntu0.24.04.1","3.4.30-1ubuntu0.24.04.2","3.4.30-1ubuntu0.24.04.2+esm1","3.4.30-1ubuntu0.24.04.3","3.4.30-1ubuntu0.24.04.3+esm1","3.4.30-1ubuntu0.24.04.3+esm2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.16-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.16-10","3.5.30-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"etcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.16-4","3.5.16-10","3.5.16-10ubuntu0.26.04.1~esm1"]}],"products":[{"vendor":"etcd-io","product":"etcd"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"red hat, inc.","product":"etcd"},{"vendor":"redhat","product":"etcd"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1552717","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Vendor Advisory","fix","web","report"]},{"url":"https://github.com/coreos/etcd/issues/9353","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1099","tags":["advisory"]},{"url":"https://github.com/coreos/etcd/commit/a7e5790c82039945639798ae9a3289fe787f5e56","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/"},{"url":"https://github.com/advisories/GHSA-wf43-55jj-vwq8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-1099","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2018-1099","tags":["report"]},{"url":"https://github.com/etcd-io/etcd/issues/10479","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1099","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1099","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:00:00Z","modified":"2024-09-17T00:36:24.817Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:08.701206Z"}],"euvd":[{"id":"EUVD-2022-1226","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:00:00Z","modified":"2024-09-17T00:36:24Z","updated_at":"2026-11-03T00:28:57.378482Z"}],"ghsa":[{"id":"GHSA-wf43-55jj-vwq8","title":"DNS Rebinding in etcd","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2022-02-15T01:57:18Z","modified":"2023-01-09T05:04:33Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20","CWE-350"],"updated_at":"2026-11-02T14:36:10.502376Z"}],"nvd":[{"id":"CVE-2018-1099","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:29:00.297Z","modified":"2026-06-17T01:50:28.687Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:24.700429Z"}],"osv":[{"id":"CVE-2018-1099","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:29:00.297Z","modified":"2026-10-20T10:50:16.517376134Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:07.641418Z"},{"id":"DEBIAN-CVE-2018-1099","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:29:00.297Z","modified":"2026-10-23T18:03:35.783916178Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:29.988046Z"},{"id":"GHSA-wf43-55jj-vwq8","title":"DNS Rebinding in etcd","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2022-02-15T01:57:18Z","modified":"2026-09-10T03:49:12.883049299Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20","CWE-350"],"updated_at":"2026-11-02T15:46:58.401149Z"},{"id":"UBUNTU-CVE-2018-1099","description":"DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).","status":"published","published":"2018-04-03T16:29:00Z","modified":"2026-10-17T12:53:40.558838919Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:16.544091Z"}]}}