---
cve: "CVE-2026-48616"
severity: "CRITICAL"
cvss: 9.3
epss: "33%"
vendor: "Rocket.Chat"
kev: false
exploited: false
published: "2026-06-17 13:20:42"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T11:53:13+02:00"
---

# CVE-2026-48616

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rc_room_type=l with rc_rid+rc_token, but the authorization path does not verify that rc_rid matches the requested file's rid. Furthermore, :fileId is predictable via sequential MongoDB IDs, and :name can be anything, allowing unauthenticated discovery of all uploaded files.

## CVSS-Vektor

```
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
```

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

## Patch verfügbar (OSV)

- 53aaae39e9723dac812ba338041a9663fb1a1d59 (Commit)
- 23cf9ba01a77d1887de4ce10135dcb36704f94ed (Commit)

## Referenzen

- <https://hackerone.com/reports/3687142>
- <https://github.com/RocketChat/Rocket.Chat/pull/40889>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-48616) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_