CVE-2026-103397 — OpenSave before 2.4.0-beta.1 Authentication Bypass via Spoofed Relay Sender
OpenSave before 2.4.0-beta.1 fails to validate sender identity in WAN relay requests, allowing unpaired room members to impersonate paired devices by spoofing the RelayMessage F…
Published: 2026-09-30 · CVSS: 6.3 · CVSS 4.0
OpenSave before 2.4.0-beta.1 fails to validate sender identity in WAN relay requests, allowing unpaired room members to impersonate paired devices by spoofing the RelayMessage From field. Attackers who know the room code can join, read paired peer identifiers from announcements, and send forged requests to access protected sync routes including save data, snapshots, and file operations.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7