https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 20:48:47 +0000 https://vulnerability.circl.lu/vuln/cve-2026-40622 <p><strong>Affected:</strong> NLnet Labs Unbound</p> <p>NLnet Labs Unbound 1.16.2 up to and including version 1.25.0 has a vulnerability of the &#39;ghost domain names&#39; family of attacks that could extend the ghost domain window by up to one cached TTL configured value. Similar to other &#39;ghost domain names&#39; attacks, an adversary needs to control a (ghost) zone and be able to query a vulnerable Unbound. A single client NS query can cause Unbound to overwrite the cached expired parent-side referral NS rrset with the child-side apex NS rrset and essentially extend the ghost domain window by up to one cached TTL configured value (&#39;cache-max-ttl&#39;). In configurations where &#39;harden-referral-path: yes&#39; is used (non-default configuration), no client NS query is required since Unbound implicitly performs that query. Unbound 1.25.1 contains a patch with a fix that does not allow extension of TTLs for (parent) NS records regardless of their trust.</p> <p><strong>Affected:</strong> NLnet Labs Unbound</p> <p>NLnet Labs Unbound 1.16.2 up to and including version 1.25.0 has a vulnerability of the &#39;ghost domain names&#39; family of attacks that could extend the ghost domain window by up to one cached TTL configured value. Similar to other &#39;ghost domain names&#39; attacks, an adversary needs to control a (ghost) zone and be able to query a vulnerable Unbound. A single client NS query can cause Unbound to overwrite the cached expired parent-side referral NS rrset with the child-side apex NS rrset and essentially extend the ghost domain window by up to one cached TTL configured value (&#39;cache-max-ttl&#39;). In configurations where &#39;harden-referral-path: yes&#39; is used (non-default configuration), no client NS query is required since Unbound implicitly performs that query. Unbound 1.25.1 contains a patch with a fix that does not allow extension of TTLs for (parent) NS records regardless of their trust.</p> https://vulnerability.circl.lu/vuln/cve-2026-40622