Bug 2568770 (CVE-2026-123580) - CVE-2026-123580 hickory-net: hickory-proto: Hickory DNS: DNSSEC nonexistence proof forgery via improper NSEC3 zone validation
Summary: CVE-2026-123580 hickory-net: hickory-proto: Hickory DNS: DNSSEC nonexistence ...
Keywords:
Status: NEW
Alias: CVE-2026-123580
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-08 02:06 UTC by OSIDB Bzimport
Modified: 2026-11-08 02:58 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-11-08 02:06:14 UTC 
Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belongs to the correct zone. Attackers can supply NSEC3 records from another zone with a matching hash label to forge DNSSEC nonexistence proofs.
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