What is GHSA-9x38-fc36-mpgq?

GHSA-9x38-fc36-mpgq is a security advisory published by GitHub Security Advisories with High severity. hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory...

Which CVE IDs does GHSA-9x38-fc36-mpgq cover?

GHSA-9x38-fc36-mpgq covers the following CVE IDs: CVE-2026-123573. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9x38-fc36-mpgq?

GHSA-9x38-fc36-mpgq has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-9x38-fc36-mpgqHighCVSS 7.5

hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory...

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-123573 →

📋 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.

🔗 References (4)

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-wgfr-mphw-j5g4
https://nvd.nist.gov/vuln/detail/CVE-2026-123573
https://www.vulncheck.com/advisories/hickory-dns-from-0.20.1-before-0.26.2-panic-in-svcb-https-zone-file-parser
https://github.com/advisories/GHSA-9x38-fc36-mpgq