CVE-2026-48616

Critical · CVSS 9.3

Rocket.Chat — Improper Access Control / Broken Authorization on Livechat File Downloads

CVSS: 9.3; nvd
EPSS: —
KEV: No
Class: other; CWE-284

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.

Search profile — drives PoC discovery

Symbols /file-upload/:fileId/:namerc_room_type=lrc_ridrc_tokenrc_room_typefileIdLivechatsequential MongoDB IDsridfile-upload

Keywords CVE-2026-48616Rocket.ChatLivechat file downloadaccess control bypassfile-upload endpointrc_ridrc_tokenrc_room_typeMongoDB sequential IDunauthenticated file disclosureCWE-284Rocket.Chat 8.5.1Rocket.Chat 7.13.9Livechat authorization bypassprotected file download bypass

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

References

Status: enriched · ingested 2026-06-19T00:00:04.000Z · profiled 2026-06-19T00:30:04.000Z