CVEvulnerability
CVE-2026-97206
7.5 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-10-21
- Last modified
- 2026-10-22
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-416
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.
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-97206.txt www.nlnetlabs.nl