CVE-2026-81679
OpenRemote versions before 1.28.0 contain a cross-realm information disclosure vulnerability in the Notification REST API that allows per-realm tenant administrators to read all tenants' sent notifications including message bodies. Attackers with read:admin credentials in one realm can submit a zero-parameter GET request to the notification endpoint to retrieve sensitive notification metadata and message content from all realms.
- Published Aug 27, 2026
- CVSS 8.3 high
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available