CVE-2026-70617

CVE-2026-70617 — Spacebar Server : A missing authorization flaw exists in Spacebar Server prior to commit dcfd910, enabling any authenticated attacker to add themselves to arbitrary private group DM channels. The attacker can exploit the unguarded PUT /channels/{channel_id}/recipients/{user_id} e...

CVE-2026-70617

Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselves to arbitrary group DM channels by sending a PUT request to the channels recipient endpoint without membership verification. Attackers can exploit the...