What is GHSA-hj9x-wc4q-vmw3?

GHSA-hj9x-wc4q-vmw3 is a security advisory published by GitHub Security Advisories with High severity. Hickory DNS hickory-proto 0.25.0 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26...

Which CVE IDs does GHSA-hj9x-wc4q-vmw3 cover?

GHSA-hj9x-wc4q-vmw3 covers the following CVE IDs: CVE-2026-123601. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hj9x-wc4q-vmw3?

GHSA-hj9x-wc4q-vmw3 has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-hj9x-wc4q-vmw3HighCVSS 6.5

Hickory DNS hickory-proto 0.25.0 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26...

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-123601 →

📋 Description

Hickory DNS hickory-proto 0.25.0 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 invert the relational operators in the wrap-around branch of find_covering_record() in nsec3.rs, so the last NSEC3 record in a zone's hash ring covers every hash except its owner. Attackers able to inject DNS responses can replay that NSEC3 record and its RRSIG to forge DNSSEC-validated negative responses denying legitimate names.

🔗 References (4)

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-588m-chg6-8jqj
https://nvd.nist.gov/vuln/detail/CVE-2026-123601
https://www.vulncheck.com/advisories/hickory-dns-0.26.0-beta.1-before-0.26.2-nsec3-proof-of-nonexistence-forgery
https://github.com/advisories/GHSA-hj9x-wc4q-vmw3