{"id":"CVE-2022-2835","aliases":["EUVD-2023-0982","GHSA-ch7v-37xg-75ph"],"status":"published","title":"coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00176,"percentile":0.07103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-923"],"published":"2023-03-03T00:00:00Z","modified":"2026-09-10T03:50:07Z","affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/coredns/coredns","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.9.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/coredns/coredns","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.9.3"}]}]}],"products":[{"vendor":"coredns","product":"coredns"},{"vendor":"coredns.io","product":"coredns"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2118542","tags":["x_transferred","Issue Tracking","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-2835","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-ch7v-37xg-75ph"},{"url":"https://github.com/coredns/coredns","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-2835","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","status":"published","published":"2023-03-03T00:00:00Z","modified":"2025-03-07T20:34:05.966Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-923"],"updated_at":"2026-11-02T14:34:32.495407Z"}],"euvd":[{"id":"EUVD-2023-0982","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","status":"published","published":"2023-03-03T00:00:00Z","modified":"2025-03-07T20:34:05Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:53:10.22972Z"}],"ghsa":[{"id":"GHSA-ch7v-37xg-75ph","title":"coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","status":"published","published":"2023-03-03T18:30:27Z","modified":"2023-03-14T19:39:53Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-923"],"updated_at":"2026-11-02T14:36:48.041653Z"}],"nvd":[{"id":"CVE-2022-2835","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","status":"published","published":"2023-03-03T16:15:09.14Z","modified":"2026-06-17T04:42:40.363Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-923"],"updated_at":"2026-11-02T14:07:36.601381Z"}],"osv":[{"id":"GHSA-ch7v-37xg-75ph","title":"coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints","description":"A flaw was found in coreDNS. This flaw allows a malicious user to reroute internal calls to some internal services that were accessed by the FQDN in a format of \u003cservice\u003e.\u003cnamespace\u003e.svc.","status":"published","published":"2023-03-03T18:30:27Z","modified":"2026-09-10T03:50:07.917218156Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-923"],"updated_at":"2026-11-02T15:46:44.927642Z"}]}}