What is GHSA-2rph-fg4h-9hjq?

GHSA-2rph-fg4h-9hjq is a security advisory published by GitHub Security Advisories with High severity. On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server...

Which CVE IDs does GHSA-2rph-fg4h-9hjq cover?

GHSA-2rph-fg4h-9hjq covers the following CVE IDs: CVE-2026-19666. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-2rph-fg4h-9hjq?

GHSA-2rph-fg4h-9hjq has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-2rph-fg4h-9hjqHighCVSS 7.5

On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server...

Vendor

GitHub Security Advisories

Published

September 16, 2026

Last Modified

September 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-19666 →

📋 Description

On a resolver configured to use dns64, if an applicable answer from the authoritative server is malformed in a specific way, the resolver named process will exit unexpectedly. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-19666
https://downloads.isc.org/isc/bind9/9.20.29
https://downloads.isc.org/isc/bind9/9.21.26
https://kb.isc.org/docs/cve-2026-19666
https://github.com/advisories/GHSA-2rph-fg4h-9hjq