CVE-2026-48616
Rocket.Chat Livechat File Access Control Bypass
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.
INFO
Published Date :
June 16, 2026, 11:08 p.m.
Last Modified :
June 16, 2026, 11:08 p.m.
Remotely Exploit :
Yes !
Source :
hackerone
Affected Products
The following products are affected by CVE-2026-48616
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.0 | CRITICAL | MITRE-CVE |
Solution
- Update Rocket.Chat to a version newer than 8.5.1.
- Apply vendor patches for affected versions.
- Verify file access controls.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-48616 vulnerability anywhere in the article.