CVE-2026-123573

HighCVSS 7.5/10Last modified Nov 10, 2026

Description

hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser. Attackers can supply untrusted zone files where only a single or double quote replaces a service parameter value, triggering a panic that crashes the parsing process.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
hickory-dns	hickory-dns	>= 0.20.1, < 0.26.2

References

Timeline

Published: Nov 8, 2026
Last modified: Nov 10, 2026
NVD status: Deferred

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