{"id":"CVE-2022-2837","aliases":["EUVD-2023-1027","GHSA-h828-v5pv-33qx"],"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 redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00388,"percentile":0.33198,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601","CWE-923"],"published":"2023-03-03T00:00:00Z","modified":"2026-09-10T03:49:24Z","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=2118543","tags":["x_transferred","Issue Tracking","Mitigation","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-2837","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h828-v5pv-33qx"},{"url":"https://github.com/coredns/coredns","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-2837","description":"A flaw was found in coreDNS. This flaw allows a malicious user to redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","status":"published","published":"2023-03-03T00:00:00Z","modified":"2025-03-07T18:43:09.482Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-923","CWE-601"],"updated_at":"2026-11-02T14:34:32.843656Z"}],"euvd":[{"id":"EUVD-2023-1027","description":"A flaw was found in coreDNS. This flaw allows a malicious user to redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","status":"published","published":"2023-03-03T00:00:00Z","modified":"2025-03-07T18:43:09Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:53:10.22972Z"}],"ghsa":[{"id":"GHSA-h828-v5pv-33qx","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 redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","status":"published","published":"2023-03-03T18:30:27Z","modified":"2023-03-14T19:39:28Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601","CWE-923"],"updated_at":"2026-11-02T14:36:48.041653Z"}],"nvd":[{"id":"CVE-2022-2837","description":"A flaw was found in coreDNS. This flaw allows a malicious user to redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","status":"published","published":"2023-03-03T16:15:09.397Z","modified":"2026-06-17T04:42:40.513Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-923","CWE-601"],"updated_at":"2026-11-02T14:07:36.601381Z"}],"osv":[{"id":"GHSA-h828-v5pv-33qx","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 redirect traffic intended for external top-level domains (TLD) to a pod they control by creating projects and namespaces that match the TLD.","status":"published","published":"2023-03-03T18:30:27Z","modified":"2026-09-10T03:49:24.657781031Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-601","CWE-923"],"updated_at":"2026-11-02T15:46:48.920784Z"}]}}