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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 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.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Liquid-co
Products
Opensave
CVE-2026-103398

OpenSave through 2.4.0 Arbitrary File Read and Write via Peer-Controlled Save Path

OpenSave through 2.4.0 fails to properly validate save paths supplied by paired peers in the manifest request handler. Attackers can specify arbitrary directories outside configured save locations to read and write files through manifest and sync routes.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Liquid-co
Products
Opensave