CVE-2026-42004
LOW
NVD
CVSS Score
3.7
Severity
LOW
Published
Jun 25, 2026
Vendor
unknown
Description
An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.