CVE-2026-35406: Containers Aardvark-DNS

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.

Affected products

• Containers Aardvark-DNS: from 1.16.0, before 1.17.1 (fixed in 1.17.1)

Published 2026-04-07. Last modified 2026-07-24.