Vulnerability Report

CVE-2026-48616

Title: Access Control Vulnerability in Livechat Files

Access Control

Proof Of Concept

No public PoC currently indexed for CVE-2026-48616.

CWE Category CWE-284

Published Date Jun 17, 2026

Modified Date Jun 18, 2026

Exploit Status Not Found

Score 9.3 CVSS v3.0

Exploit Probability (EPSS)

0.28%

Vulnerability Summary

CVE-2026-48616: 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.

Impacted Vendors

rocketchat 1

rocket.chat 1

Reference Links

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

CVSS v3.0

Source Entity [email protected]

Severity CRITICAL

9.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-48616 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 18, 2026 MODIFIED

Vulnerability data updated via NVD.

June 17, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.