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CVE-2026-123584 Details

Description

The hickory-net crate in Hickory DNS 0.26.0 before 0.26.2 stops listening and returns an error when a client UDP connection receives a datagram that cannot be parsed as a DNS message. Remote attackers who guess the query's source port, without knowing the transaction ID, can spoof malformed responses to abort client queries, causing denial of service.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-v44v-c8m4-gc43	[email protected]
https://www.vulncheck.com/advisories/hickory-dns-0.26.0-before-0.26.2-udp-client-denial-of-service-via-spoofed-responses	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-696	Incorrect Behavior Order	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes