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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54609
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-28 17:16:52 UTC
Updated2026-07-30 19:59:01 UTC
DescriptionQTI 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.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS: 0.002630000 probability, percentile 0.180190000 (date 2026-08-03)

Problem Types: CWE-400 | CWE-406 | CWE-770 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-406 CWE-406: Insufficient Control of Network Message Volume (Network Amplification) | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
3.1CNADECLARED8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Quiet-Terminal-Interactive QTINeon affected 1.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/Quiet-Terminal-Interactive/QTINeon/security/advisories/GHSA-8... [email protected] github.com
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