CVE-2026-54609

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 8.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.6
EG Score
8.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

July 28, 2026

Last Modified

July 28, 2026

Advisory Details (1)

Auto-updated Jul 28, 2026
Patch available. Sources: github.
github Patch Available

Unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding · Advisory · Quiet-Terminal-Interactive/QTINeon · GitHub

https://github.com/Quiet-Terminal-Interactive/QTINeon/security/advisories/GHSA-85rg-p3fr-xc2f

Vendor Advisories for CVE-2026-54609(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
mavencom.quietterminal:qti-neon—ghsa
npmqti-neon—ghsa
pipqti-neon—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-29 05:43 UTCGHSA enrichment
  2. 2026-07-28 18:25 UTCGHSA enrichment
  3. 2026-07-28 17:22 UTCEG score recompute
  4. 2026-07-28 17:22 UTCGHSA enrichment
  5. 2026-07-28 16:53 UTCEG score recompute
  6. 2026-07-28 16:53 UTCGHSA enrichment
  7. 2026-07-28 16:53 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-54609?
CVE-2026-54609 is a high vulnerability published on July 28, 2026. 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…
When was CVE-2026-54609 disclosed?
CVE-2026-54609 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-54609?
CVE-2026-54609 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-54609?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54609, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-54609

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