{"id":"CLEANSTART-2026-GZ56197","summary":"Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via D...","details":"CVE-2023-50868 affects multiple packages. The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. See references for individual vulnerability details.","modified":"2026-10-31T16:04:19.125246544Z","published":"2026-10-31T14:13:25.292121Z","upstream":["CVE-2023-50868"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-GZ56197.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2023-50868"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50868"}],"affected":[{"package":{"name":"unbound","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/unbound"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-GZ56197.json"}},{"package":{"name":"bind","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/bind"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.18.24-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-GZ56197.json"}},{"package":{"name":"pdns-recursor","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/pdns-recursor"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-GZ56197.json"}},{"package":{"name":"knot-resolver","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/knot-resolver"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.7.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-GZ56197.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}