{"id":"CVE-2026-1519","details":"If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).\nThis issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.","modified":"2026-07-12T04:01:56.155079541Z","published":"2026-03-25T14:16:33.110Z","related":["ALSA-2026:7915","ALSA-2026:8075","ALSA-2026:8155","ALSA-2026:8312","ALSA-2026:8352","SUSE-SU-2026:1209-1","SUSE-SU-2026:1229-1","SUSE-SU-2026:1230-1","SUSE-SU-2026:1312-1","SUSE-SU-2026:1351-1","SUSE-SU-2026:1366-1","SUSE-SU-2026:1428-1","SUSE-SU-2026:21204-1","openSUSE-SU-2026:10448-1","openSUSE-SU-2026:20550-1"],"database_specific":{},"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-1519"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1519.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:11371"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:11372"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:15890"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16060"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16064"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24500"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24851"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24934"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25083"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25171"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25214"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:29110"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:29863"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34048"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6935"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7915"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8075"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8155"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8312"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8352"},{"type":"ADVISORY","url":"https://kb.isc.org/docs/cve-2026-1519"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451305"},{"type":"REPORT","url":"https://lists.debian.org/debian-lts-announce/2026/04/msg00008.html"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.18.47"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.20.21"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.21.20"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/isc-projects/bind9","events":[{"introduced":"1477c19dd9a347ee19a42dac227f299a4680506f"},{"last_affected":"acf2ba4a9337bced7e666b0460db4f58a4611eb8"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"84c0d37e126c1ef36345a4f5b0ccd4faf1528c1e"},{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"12f97d4162d435940598de4870d0088b8e6d266c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"3e7037ceef40688d5b4eb4a55a9df80c7547dd9f"}],"database_specific":{"extracted_events":[{"introduced":"9.11.0"},{"last_affected":"9.16.50"},{"introduced":"9.18.0"},{"fixed":"9.18.47"},{"introduced":"9.20.0"},{"fixed":"9.20.21"},{"introduced":"9.21.0"},{"fixed":"9.21.20"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","source":"CPE_RANGE"}}],"versions":["v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1519.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.isc.org/isc-projects/bind9","events":[{"introduced":"1477c19dd9a347ee19a42dac227f299a4680506f"},{"last_affected":"acf2ba4a9337bced7e666b0460db4f58a4611eb8"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"84c0d37e126c1ef36345a4f5b0ccd4faf1528c1e"},{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"12f97d4162d435940598de4870d0088b8e6d266c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"3e7037ceef40688d5b4eb4a55a9df80c7547dd9f"}],"database_specific":{"extracted_events":[{"introduced":"9.11.0"},{"last_affected":"9.16.50"},{"introduced":"9.18.0"},{"fixed":"9.18.47"},{"introduced":"9.20.0"},{"fixed":"9.20.21"},{"introduced":"9.21.0"},{"fixed":"9.21.20"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","source":"CPE_RANGE"}}],"versions":["v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1519.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:N/I:N/A:H"}]}