What is GHSA-2v9q-m22g-rqg6?

GHSA-2v9q-m22g-rqg6 is a security advisory published by GitHub Security Advisories with Medium severity. Hickory DNS hickory-proto 0.25.0-alpha.1 through 0.26.0-alpha.1 and hickory-net before 0.26.2...

Which CVE IDs does GHSA-2v9q-m22g-rqg6 cover?

GHSA-2v9q-m22g-rqg6 covers the following CVE IDs: CVE-2026-123597. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-2v9q-m22g-rqg6?

GHSA-2v9q-m22g-rqg6 has a CVSS v3 base score of 3.7, published by GitHub Security Advisories.

GHSA-2v9q-m22g-rqg6MediumCVSS 3.7

Hickory DNS hickory-proto 0.25.0-alpha.1 through 0.26.0-alpha.1 and hickory-net before 0.26.2...

Vendor

GitHub Security Advisories

Published

November 8, 2026

Last Modified

November 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-123597 →

📋 Description

Hickory DNS hickory-proto 0.25.0-alpha.1 through 0.26.0-alpha.1 and hickory-net before 0.26.2 contain a logic bug in DnssecDnsHandle's DS-fetch path that caches transient DS lookup errors as Bogus DNSSEC validation verdicts. An attacker who induces a SERVFAIL, REFUSED, or timeout response to a child-zone DS sub-query causes the validator to return SERVFAIL for all names under that zone until the cache entry's TTL expires.

🔗 References (4)

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-xv7c-h5g9-x25x
https://nvd.nist.gov/vuln/detail/CVE-2026-123597
https://www.vulncheck.com/advisories/hickory-dns-dnssec-validation-cache-poisoning-via-transient-ds-fetch-errors
https://github.com/advisories/GHSA-2v9q-m22g-rqg6