CVE-2026-48616 Missing authorization in Rocket.Chat
Unauthenticated attackers can access protected Livechat files by exploiting missing room ID verification and predictable file IDs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48616?
CVE-2026-48616 is a critical missing authorization vulnerability in Rocket.chat Rocket.chat, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-48616?
It affects 1 product.
Products include Rocket.chat Rocket.chat.
How do I fix CVE-2026-48616?
No fix has been published for CVE-2026-48616 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-48616 being exploited?
There is no known exploitation of CVE-2026-48616 in the wild and no public exploit code.
Other vulnerabilities in Rocket.chat Rocket.chat
Sources
Also known as GHSA-fgjp-hxx6-j7jx.