{"id":"CVE-2026-96405","revision":"508059eafd37469db5e65cec34d40854","records":[{"revision":"508059eafd37469db5e65cec34d40854","observedAt":"2026-10-29T21:14:49.558+00:00","statement":{"source":"cve-program","id":"CVE-2026-96405","aliases":[],"title":"Aggregate DNS name chained pointer decompression work leads to degradation of service.","description":"NLnet Labs Unbound up to and including version 1.26.1 limits compression-pointer traversal for each individual domain-name operation but has no aggregate inbound decompression-work budget. Many chained compression pointers in a message results in a lot of CPU usage following them. A malicious actor with recursive-query access and control of an ordinarily delegated authority that serves specially crafted replies can exploit the vulnerability and degrade Unbound's general performance.","state":0,"publishedAt":"2026-10-21T08:57:26.986+00:00","modifiedAt":"2026-10-29T19:07:33.197+00:00","affected":[{"ecosystem":"Vendor product","name":"Unbound","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"NLnet Labs\",\n                    \"product\": \"Unbound\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThan\": \"1.26.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-96405.txt"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-96405","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-96405","identifiers":["CVE-2026-96405"]},"retained":false,"historicalAffected":[]}],"coverage":[]}