---
cve: "CVE-2026-54463"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "faye"
kev: false
exploited: false
published: "2026-07-17 20:17:26"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:07:45+02:00"
---

# CVE-2026-54463

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 5cab908d5e72d40345751edbd4f1e1ef75d53d89 (Commit)
- d0141f041f6e3677a951255d547a313e732ccbe0 (Commit)

## Referenzen

- <https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p>
- <https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-54463) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_