CVE-2026-52690

Spoofed answers can mark an authoritative non-EDNS capable

CVSS 5.9 MEDIUMEPSS 0.4%CWE-290

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

PowerDNS · Recursor

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References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html