CVE-2026-96405Medium· 5.3▾ SunlitNLnet 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 r…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0 · exploitation 0
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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.
Unbound < 1.26.2This issue is fixed starting with version 1.26.2
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-80225Medium· 5.3In NLnetLabs Unbound up to and including 1.26.0, a degradation of service vulnerability is present in the TCP/DoT reading procedure where there is no limit on consecutive reads
CVE-2026-85501Medium· 5.3Novel vulnerabilities to launch algorithmic complexity attacks on DNSSEC have been researched under the term 'ReTrap'
CVE-2026-41292High· 7.5NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options
CVE-2026-109125Medium· 5.3Possible cache poisoning vulnerability via a cache side-channel exposed by 'unwanted-reply-threshold'
CVE-2026-50106Medium· 6.5Possible insecure NXDOMAIN for non-existing records under a configured island trust anchor underneath an insecure parent.
CVE-2026-35501Low· 3.7Bypass of a configured island trust anchor underneath an insecure parent from an atacker-controlled NSEC record.