CVE-2026-10846

CVE-2026-10846 affects nlnts ldns used as a stub resolver over UDP. FreeBSD advisories confirm that ldns failed to verify response provenance (source IP/port, transaction ID, and question matching), enabling off‑path spoofing of UDP responses and arbitrary data delivery to programs using ldns (e....

CVE-2026-10846 Insufficient verification that responses belong to a query

NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of t...