CVE-2026-80225
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Sep 16, 2026
Vendor
unknown
Description
In 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. A malicious actor that can stream and sustain a rate of distinct uncached names over the TCP/DoT connection, monopolizes a single worker's entire event loop for as long as its writes stay ahead of the drain.