{"id":"CVE-2026-42390","summary":"ZONEMD validation can be bypassed","details":"An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.","modified":"2026-08-12T16:24:21.241017Z","published":"2026-06-25T13:01:08.394Z","database_specific":{"cna_assigner":"OX","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42390.json"},"references":[{"type":"WEB","url":"https://repo.powerdns.com/"},{"type":"ADVISORY","url":"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42390.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42390"},{"type":"PACKAGE","url":"https://github.com/PowerDNS/pdns"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/powerdns/pdns","events":[{"introduced":"c95adbda8ce519923dfdbe7947d82a2692e18af9"},{"fixed":"9f875a6231f22b189c3f03a3c97a910079c47115"}],"database_specific":{"extracted_events":[{"introduced":"5.4.0"},{"fixed":"5.4.3"}],"source":"AFFECTED_FIELD"}}],"versions":["rec-5.4.2","rec-5.4.0-rc1","rec-5.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42390.json","vanir_signatures_modified":"2026-08-12T16:24:21Z","vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["71329078264894497200496962563892013914","314272552250244648567858200824068156160","254546730563956205117486205788166146028","128063049265375810574434524958835793185","51075072797667112938322960446173147917","1769984556611710233346913634038737002","120133930855658610965004980948818375267","126102207894564060240255718651762163470","147386961934458703471621645482809402359","164795306008441146365693274181779490437"],"threshold":0.9},"id":"CVE-2026-42390-9363d976","signature_type":"Line","signature_version":"v1","source":"https://github.com/powerdns/pdns/commit/9f875a6231f22b189c3f03a3c97a910079c47115","target":{"file":"pdns/recursordist/syncres.cc"}}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}