What is GHSA-h7w8-vg64-36f2?

GHSA-h7w8-vg64-36f2 is a security advisory published by GitHub Security Advisories with Low severity. The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are...

Which CVE IDs does GHSA-h7w8-vg64-36f2 cover?

GHSA-h7w8-vg64-36f2 covers the following CVE IDs: CVE-2026-52686. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h7w8-vg64-36f2?

GHSA-h7w8-vg64-36f2 has a CVSS v3 base score of 3.7, published by GitHub Security Advisories.

GHSA-h7w8-vg64-36f2LowCVSS 3.7

The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are...

Vendor

GitHub Security Advisories

Published

July 23, 2026

Last Modified

July 23, 2026

🔗 CVE IDs covered (1)

CVE-2026-52686 →

📋 Description

The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer is a CNAME or DNAME record.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-52686
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-10.html
https://github.com/advisories/GHSA-h7w8-vg64-36f2