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CVE-2026-54609
QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding
High8.6EPSS 0.46%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Weakness
- CWE-400: Uncontrolled Resource Consumption (opens in a new tab)All about CWE-400 and its CVEs
- CWE-406: Insufficient Control of Network Message Volume (Network Amplification) (opens in a new tab)All about CWE-406 and its CVEs
- CWE-770: Allocation of Resources Without Limits or Throttling (opens in a new tab)All about CWE-770 and its CVEs
Affected products
Quiet-Terminal-Interactive · QTINeon
- affected 1.0.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavencom.quietterminal:qti-neonGHSA-85rg-p3fr-xc2f (opens in a new tab)
- PyPIqti-neonGHSA-85rg-p3fr-xc2f (opens in a new tab)
- npmqti-neonGHSA-85rg-p3fr-xc2f (opens in a new tab)
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-85rg-p3fr-xc2f (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-54609)Record last updated .