rootpwn

medium · CVSS v3 5.6 · CVSS v4 6.3

CVE-2026-103397

OpenSave before 2.4.0-beta.1 fails to validate sender identity in WAN relay requests, allowing unpaired room members to …

Description

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.

Scores

Severity
medium
CVSS v2
5.1
CVSS v3
5.6
CVSS v4
6.3
EPSS
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