CVE-2026-97206

7.5 Élevée

Publiée le 21/10/2026 à 11:17 · Modifiée le 22/10/2026 à 17:22 · En attente d'analyse NVD · Source : sep@nlnetlabs.nl

Description

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the DoQ stream. Cleanup frees the DoQ stream and when the pending mesh reply later completes it dereferences a stale pointer leading to a crash.

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Produits concernés

NLnet Labs Unbound

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.5 Élevée	sep@nlnetlabs.nl	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-416

Références

https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-97206.txt

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories