Cinder-Room

Ship single-file Windows, macOS and Linux executables

Improvements on security loop holes and bug fixes:

• Closes a full host takeover.

• Files no longer vanish from downloads while an unauthorized DELETE is in flight.

• Undecided guests no longer hold a participant slot forever, so the room can't be jammed shut by opening sockets and parking in the waiting room.

• No more leaked web worker per failed call attempt — retrying a call no longer degrades the tab.

• The UI now matches what the relays already allow; the host can moderate someone else's upload.

• Least privilege — tokens grant only camera, mic, and screen share, nothing else.

Cinder Room is designed for temporary collaboration where participants want to control the infrastructure and avoid permanent account or message history. Suitable uses include:

• Confidential team, client, legal, financial, research, or incident-response meetings

• Private presentations with encrypted media, group chat, direct conversations, and temporary files

• Short-lived support sessions involving screen sharing, documents, or sensitive troubleshooting details

• Coordination by journalists, nonprofits, community groups, or small teams that do not want a hosted account

• Exchanging temporary credentials, one-time passwords, recovery codes, sensitive links, or access instructions