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CVE-2026-48616

Published: Jun 16, 2026Updated: Jun 18, 2026 Sources: CVE List NVDCWE-284
NVD MITRE
9.3CVSSCRITICAL
EPSS Score
0.3%
Top 80.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-284

Affected Products

rocket.chatrocket.chat
On-premWeb App
Communications / messaging-chat
Rocket.ChatRocket.Chat
On-premWeb App
Communications / messaging-chat
rocket.chatcommercialILCommunicationsaka rocket chat, rocketchat

Exploitability

Official Patch Available

References

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

Timeline

Published
Jun 16, 2026
Last Updated
Jun 18, 2026

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