{"id":"CVE-2026-96405","aliases":[],"cve":{"records":[{"id":"CVE-2026-96405","source":"NLnet Labs","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-14T09:16:14.093Z","published":"2026-10-21T08:57:26.986Z","modified":"2026-10-29T19:07:33.197Z"}],"publishers":[{"name":"NLnet Labs","role":"CNA","organizationId":"206fc3a0-e175-490b-9eaa-a5738056c9f6","modified":"2026-10-21T08:57:26.986Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T19:07:33.197Z"}],"references":[{"url":"https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-96405.txt","tags":["vendor-advisory"],"source":"NLnet Labs"}],"weaknesses":[{"id":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","source":"NLnet Labs"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T19:07:13.696474Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Aggregate DNS name chained pointer decompression work leads to degradation of service.","titleSource":"NLnet Labs","descriptionSource":"NLnet Labs","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.","score":5.3,"severity":"medium","published":"2026-10-21T08:57:26.986Z","modified":"2026-10-29T19:07:33.197Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"NLnet Labs","name":"Unbound","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.26.2","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"NLnet Labs","url":"https://www.cve.org/CVERecord?id=CVE-2026-96405"}],"remediation":[{"text":"This issue is fixed starting with version 1.26.2","source":"NLnet Labs","url":"https://www.cve.org/CVERecord?id=CVE-2026-96405"}],"references":["https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-96405.txt"],"sources":[{"name":"CVE","id":"CVE-2026-96405","modified":"2026-10-29T19:07:33.197Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-96405"}],"assessments":[{"source":"NLnet Labs","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3}],"sourceAffected":[],"observedAt":"2026-10-29T19:29:51.725Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:10:30.655Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T19:35:31.070Z","attemptedAt":"2026-10-29T19:35:31.070Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T19:35:30.706Z","attemptedAt":"2026-10-29T19:35:30.706Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T19:35:31.070Z","attemptedAt":"2026-10-29T19:35:31.070Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T19:35:31.070Z","attemptedAt":"2026-10-29T19:35:31.070Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-r7j4-9v27-x32x","url":"https://github.com/advisories/GHSA-r7j4-9v27-x32x","modified":"2026-10-21T09:30:35Z","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-10-29T19:35:30.706Z"},{"source":"FIRST EPSS","id":"CVE-2026-96405","url":"https://www.first.org/epss/","probability":0.00254,"percentile":0.16909,"date":"2026-10-29","checkedAt":"2026-10-29T19:35:31.070Z"},{"source":"NVD","id":"CVE-2026-96405","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96405","modified":"2026-10-29T19:17:29.453","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-10-29T19:35:31.070Z"},{"source":"ENISA EUVD","id":"EUVD-2026-107153","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-107153","modified":"Oct 21, 2026, 8:57:26 AM","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","checkedAt":"2026-10-29T19:35:31.070Z"}],"aiSummary":{"text":"Unbound versions up to 1.26.1 have no aggregate decompression-work budget, allowing a malicious actor with recursive-query access to degrade performance with specially crafted replies. The vulnerability is due to allocation of resources without limits. An attacker can exploit this with control of a delegated authority.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:50:08.003Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-96405"}]}}