CVE-2026-54609

High

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.

SeverityHigh

CVSS8.6

Exploit probability—

ProductCom.quietterminal:qti-neon

PublishedJul 28, 2026

First seenJul 28, 2026

Weakness typeCWE-400Uncontrolled resource consumption CWE-406CWE-406 CWE-770Allocation of resources without limits

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
com.quietterminal:qti-neonMaven	No range specified	—
qti-neonPyPI	No range specified	—

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