---
cve: "CVE-2022-31064"
severity: "MEDIUM"
cvss: 6.5
epss: "1.3%"
vendor: "bigbluebutton"
kev: false
exploited: false
published: "2022-06-27 20:15:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-26T09:24:51+02:00"
---

# CVE-2022-31064

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. The attack occurs when the attacker (with xss in the name) starts a chat. in the victim's client the JavaScript will be executed. This issue has been addressed in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- e2a2fdc5500192c603ae888a67dca0affdf00d7c (Commit)

## Referenzen

- <https://github.com/bigbluebutton/bigbluebutton/pull/15090>
- <https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87>
- <https://github.com/bigbluebutton/bigbluebutton/pull/15067>
- <https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/>
- <http://seclists.org/fulldisclosure/2022/Jun/52>
- <http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2022-31064) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_