CVE-2023-42805: Quinn Project Quinn

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

quinn-proto is a state machine for the QUIC transport protocol. Prior to versions 0.9.5 and 0.10.5, receiving unknown QUIC frames in a QUIC packet could result in a panic. The problem has been fixed in 0.9.5 and 0.10.5 maintenance releases.

Affected products

• Quinn Project Quinn: before 0.9.5 (fixed in 0.9.5); from 0.10.0, before 0.10.5 (fixed in 0.10.5)

Published 2023-09-21. Last modified 2026-06-17.