CVE•Published 2026-06-17•Modified 2026-06-18•1 article on news•4 live references•NVD data

CVE-2026-48616Rocket.chat · Rocket.chat

Vulnerability data via NVD (ingested)

CVSS v3.1

9.3

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 81% of all CVEs

Weaknesses (CWE)

CWE-284Improper Access Control

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.

Timeline

Published 2026-06-17

Modified 2026-06-18

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag332 hosts

vuln:CVE-2026-48616

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Rocket.chat Rocket.chat"

All exposed Rocket.chat Rocket.chat instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Rocket.chat"

HTTP body or banner mentions "Rocket.chat" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-48616