CVE-2026-48616

Unauthorized File Discovery in Rocket.Chat Livechat File Downloads

Published Jun 16, 2026 CVSS 3.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Unauthorized File Discovery in Rocket.Chat Livechat File Downloads
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Rocket.chat
Rocket.chat rocket.chat
Vendors & Products Rocket.chat
Rocket.chat rocket.chat
Type Values Removed Values Added
Description 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.
Weaknesses CWE-284
References
Metrics cvssV3_0

{'score': 9.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Jun 17, 2026, 3:01 PM
Reserved
May 22, 2026, 3:00 PM
Status
Analyzed
Published
Jun 17, 2026, 1:20 PM
Modified
Oct 24, 2026, 1:10 PM