{"id":"CVE-2026-3593","details":"A use-after-free vulnerability exists within the DNS-over-HTTPS implementation.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.\nBIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.","modified":"2026-06-01T18:29:22.700238543Z","published":"2026-05-20T13:16:23.923Z","related":["openSUSE-SU-2026:10915-1"],"references":[{"type":"ADVISORY","url":"https://kb.isc.org/docs/cve-2026-3593"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.20.23"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.21.22"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/isc-projects/bind9","events":[{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"7d0b4d4d436e7b950225a533e5bc56d8f935cc1c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"02a7b2c8a549b79cf885d1a0cda28b74de22d197"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"9.20.0"},{"fixed":"9.20.23"},{"introduced":"9.21.0"},{"fixed":"9.21.22"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-3593.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.isc.org/isc-projects/bind9","events":[{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"7d0b4d4d436e7b950225a533e5bc56d8f935cc1c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"02a7b2c8a549b79cf885d1a0cda28b74de22d197"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"9.20.0"},{"fixed":"9.20.23"},{"introduced":"9.21.0"},{"fixed":"9.21.22"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-3593.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}