---
cve: "CVE-2026-65644"
severity: "LOW"
cvss: 3.1
epss: "6.5%"
vendor: "Rocket.Chat"
kev: false
exploited: false
published: "2026-08-21 04:18:13"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T04:46:23+02:00"
---

# CVE-2026-65644

> 3.1 LOW · 🧪 PoC

## Beschreibung

Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue.

## Patch verfügbar (OSV)

- dd2f20f9087383fdeb43590ecf4a01127b588e57 (Commit)
- 620394519991542b13db82e361dcb0c3e2014c1e (Commit)

## Referenzen

- <https://hackerone.com/reports/3872858>
- <https://github.com/RocketChat/Rocket.Chat/pull/41595>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-65644) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_