Spacebar Server
Monthly
Cross-channel message deletion in Spacebar Server (all commits before 8d126f4) permits authenticated users holding MANAGE_MESSAGES permission in any channel to delete messages residing in channels they do not control. Both the single-delete and bulk-delete API handlers failed to scope their database queries to the channel_id present in the request path, allowing attacker-supplied message IDs from foreign channels to be processed and destroyed. A publicly available exploit exists, with the root cause and fix confirmed by the upstream security advisory GHSA-62g6-28hv-h6hc; no CISA KEV listing has been issued at time of analysis.
Cross-channel message deletion in Spacebar Server (all commits before 8d126f4) permits authenticated users holding MANAGE_MESSAGES permission in any channel to delete messages residing in channels they do not control. Both the single-delete and bulk-delete API handlers failed to scope their database queries to the channel_id present in the request path, allowing attacker-supplied message IDs from foreign channels to be processed and destroyed. A publicly available exploit exists, with the root cause and fix confirmed by the upstream security advisory GHSA-62g6-28hv-h6hc; no CISA KEV listing has been issued at time of analysis.