High severity7.5NVD Advisory· Published Nov 8, 2026
CVE-2026-123607
CVE-2026-123607
Description
Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 and hickory-net before 0.26.1 contain an unbounded loop vulnerability in DnssecDnsHandle NSEC3 closest-encloser proof validation when the SOA owner is not an ancestor of the QNAME. Upstream attackers can return NoData or NXDomain responses with a cross-zone SOA record to panic debug builds or exhaust memory in release builds.
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Affected products
1- Range: 0.25.0-alpha.3 - 0.25.2, <0.26.1
Patches
Vulnerability mechanics
References
2News mentions
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