Vulnerability DatabaseCVE-2026-48616
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CVE-2026-48616
Published:June 16, 2026
Updated:August 04, 2026
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.
Affected Packages
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) =8.5.0 <8.5.1
Fix Suggestion:
Update to version 8.5.1
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=8.4.0 <8.4.4
Fix Suggestion:
Update to version 8.4.4
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=7.13.0 <7.13.9
Fix Suggestion:
Update to version 7.13.9
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=8.0.0 <8.0.7
Fix Suggestion:
Update to version 8.0.7
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=0.8.0 <7.10.13
Fix Suggestion:
Update to version 7.10.13
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=8.1.0 <8.1.6
Fix Suggestion:
Update to version 8.1.6
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=8.3.0 <8.3.6
Fix Suggestion:
Update to version 8.3.6
https://github.com/RocketChat/Rocket.Chat.git (GITHUB):
Affected version(s) >=8.2.0 <8.2.6
Fix Suggestion:
Update to version 8.2.6
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48616.json
https://github.com/RocketChat/Rocket.Chat/pull/40889
https://hackerone.com/reports/3687142
https://nvd.nist.gov/vuln/detail/CVE-2026-48616
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Access Control
CWE-284
EPSS
Base Score:
0.33