CVE-2026-97206High· 7.5▾ TwilightNLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connectio…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the DoQ stream. Cleanup frees the DoQ stream and when the pending mesh reply later completes it dereferences a stale pointer leading to a crash.
Unbound >= 1.22.0 < 1.26.2This issue is fixed starting with version 1.26.2
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-96405Medium· 5.3Aggregate DNS name chained pointer decompression work leads to degradation of service.
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CVE-2026-35501Low· 3.7Bypass of a configured island trust anchor underneath an insecure parent from an atacker-controlled NSEC record.