Vulnerability DatabaseCVE-2026-123593
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CVE-2026-123593
Published:November 08, 2026
Updated:November 09, 2026
Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto 0.24.0 through 0.26.0-alpha.1 compare DNSKEY public keys against DNSSEC trust anchors without checking the DNSKEY record name, so an RRset made up only of trusted keys is accepted without RRSIG verification. Attackers able to spoof or control name server responses can replace a secure zone's DNSKEY RRset with the root zone's keys, and use a large TTL to keep it cached.
Affected Packages
https://github.com/hickory-dns/hickory-dns.git (GITHUB):
Affected version(s) =0.6.0 <v0.26.2 || >=0.7.0 <v0.26.2 || >=0.8.0 <v0.26.2 || >=0.9.0 <v0.26.2 || >=0.10.0 <v0.26.2 || =0.11.0 <v0.26.2 || =c0.12.0 <v0.26.2 || =resolver.0.4.0 <v0.26.2 || >=r0.5.0 <v0.26.2 || =r0.7.0 <v0.26.2 || >=r0.8.0 <v0.26.2 || >=r0.9.0 <v0.26.2 || >=r0.10.0 <v0.26.2 || >=r0.11 <v0.26.2 || =r0.12_cs0.17 <v0.26.2 || =v0.13.0 <v0.26.2 || =v0.14.0 <v0.26.2 || =cs0.15.0 <v0.26.2 || >=cs0.16 <v0.26.2 || >=0.18.0.alpha.2 <v0.26.2 || >=0.19.0 <v0.26.2 || =v0.19.7 <v0.26.2 || >=v0.20.0-alpha.1 <v0.26.2 || >=v0.21.0-alpha.1 <v0.26.2 || >=v0.22.0 <v0.26.2 || >=v0.23.0-alpha.1 <v0.26.2 || >=v0.24.0 <v0.26.2 || >=v0.25.0-alpha.1 <v0.26.2 || >=v0.26.0-alpha.1 <v0.26.2
Fix Suggestion:
Update to version v0.26.2
hickory-proto (RUST):
Affected version(s) =0.26.0-alpha.1 <0.26.2 || >=0.24.0 <0.26.2 || >=0.25.0-alpha.1 <0.26.2
Fix Suggestion:
Update to version 0.26.2
hickory-net (RUST):
Affected version(s) >=0.26.0-beta.1 <0.26.2
Fix Suggestion:
Update to version 0.26.2
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123593.json
https://www.vulncheck.com/advisories/hickory-dns-0.26.0-beta.1-before-0.26.2-dnssec-validation-bypass-via-trustanchors
https://nvd.nist.gov/vuln/detail/CVE-2026-123593
https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-j2rc-wxwh-62g9
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Incomplete Comparison with Missing Factors
CWE-1023
EPSS
Base Score:
0.25