CVE-2026-123589

5.3 MEDIUMpublic exploit available

Published 2026-11-08 · Updated 2026-11-10

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

The DNS-over-QUIC (DoQ) server in hickory-server (hickory-dns) before 0.26.2 does not apply any timeout when reading a request message from a QUIC stream, bypassing all configured timeouts. A remote unauthenticated client can open a connection and a request stream and hold it open indefinitely, consuming server resources and causing a denial of service.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

CWE-400

Public exploit & PoC references

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-g8wg-4mwh-fjfv

All references

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-g8wg-4mwh-fjfv
https://www.vulncheck.com/advisories/hickory-dns-before-0.26.2-denial-of-service-via-missing-dns-over-quic-request-read-timeout

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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