High severityNVD Advisory· Published Jul 28, 2026· Updated Jul 28, 2026
QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding
CVE-2026-54609
Description
QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECT_REQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of service on the host. No fixed version is available as of this review.
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Affected products
2- Range: <1.0.0
Patches
Vulnerability mechanics
References
2- github.com/advisories/GHSA-85rg-p3fr-xc2fghsaADVISORY
- github.com/Quiet-Terminal-Interactive/QTINeon/security/advisories/GHSA-85rg-p3fr-xc2fghsax_refsource_CONFIRMWEB
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