PT-2026-139889

CVE-2026-123608

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Published

2026-11-08

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Updated

2026-11-08

Description by

CVSS 3.1
7.5
High
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Hickory DNS hickory-proto from 0.3.1 before 0.26.1 contains a denial of service vulnerability in BinEncoder that allows remote attackers to exhaust CPU through quadratic-time name compression. Attackers can send malicious DNS messages with many records that add many candidate labels and trigger repeated linear scans during encoding, amplifying CPU exhaustion.
Exploitability
Fix
Researchers
Vendors
Affected products
Weakness enumeration
CWE-407: Inefficient Algorithmic Complexity
Related identifiers
CVE-2026-123608
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