QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding

ImpactThe relay's reconnect handler forwards every RECONNECTREQUEST to the host without deduplication or a size cap on the pendingReconnects map, unlike the connect flow which guards against this with maxPendingConnections. An unauthenticated attacker who knows a valid session ID can send...

CVE-2026-54609

QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECTREQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of...

NPM: QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding

NPM: QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECTREQUEST forwarding vulnerability discovered by ? in WordPress Npm qti-neon versions 1.0.0...

CVE-2026-54609 QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding

QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECTREQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of...

CVE-2026-54609

QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECTREQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of...

EUVD-2026-49905

QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECTREQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of...

PT-2026-65539

Name of the Vulnerable Software and Affected Versions QTI Neon version 1.0.0 Description In the NeonRelay implementation across Java, Python, and TypeScript, the handleReconnectRequest function forwards RECONNECT REQUEST packets to the host without bounding them or implementing deduplication. An...