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CVE-2026-96405Published

Aggregate DNS name chained pointer decompression work leads to degradation of service.

Exact source revision recorded 29 Oct 2026 21:14:49 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-96405

Published

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.

Source published
21 Oct 2026 08:57:26 UTC
Source modified
29 Oct 2026 19:07:33 UTC
Observed here
29 Oct 2026 21:14:49 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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Sources read 7 Nov 04:45 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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