CVE-2026-93657

HIGH 7.5

hickory-resolver before 0.26.2 DNSSEC Validation Bypass

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks.

CWE	CWE-347
Vendor	hickory-dns
Product	hickory-resolver
Published	Sep 18, 2026

Stay Ahead of the Next One

Get instant alerts for hickory-dns hickory-resolver

Be the first to know when new high vulnerabilities affecting hickory-dns hickory-resolver are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

hickory-dns / hickory-resolver

0 < 0.26.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-5j98-2g5x-46v6 github.com: https://github.com/hickory-dns/hickory-dns/commit/30720f4fb22e5556ecbf26d2c8274ea4a9fdd238 github.com: https://github.com/hickory-dns/hickory-dns/pull/3871 github.com: https://github.com/hickory-dns/hickory-dns/releases/tag/v0.26.2 github.com: https://github.com/hickory-dns/hickory-dns vulncheck.com: https://www.vulncheck.com/advisories/hickory-resolver-before-0.26.2-dnssec-validation-bypass

Credits

Ali Firas (thesmartshadow)