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.
Published: 2026-06-16
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 18 Jun 2026 04:45:00 +0000

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'}

Wed, 17 Jun 2026 05:15:00 +0000

Type Values Removed Values Added
First Time appeared Rocket.chat
Rocket.chat rocket.chat
Vendors & Products Rocket.chat
Rocket.chat rocket.chat

Tue, 16 Jun 2026 23:15:00 +0000

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'}

Subscriptions

Rocket.chat Rocket.chat
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-06-17T15:01:42.246Z

Reserved: 2026-05-22T15:00:09.276Z

Link: CVE-2026-48616

cve-icon Vulnrichment

Updated: 2026-06-17T15:01:36.397Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-17T18:45:10Z

Weaknesses