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 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.
- CVSS 3.1
- 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-400, CWE-406, CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-85rg-p3fr-xc2f | Maven | com.quietterminal:qti-neon | 1.0.0 | no fix published |
| GHSA-85rg-p3fr-xc2f | PyPI | qti-neon | 1.0.0 | no fix published |
| GHSA-85rg-p3fr-xc2f | npm | qti-neon | 1.0.0 | no fix published |
| PYSEC-2026-3615 | PyPI | qti-neon | 1.0.0 | no fix published |