CVE-2026-103398

HighCVSS 8.1

Published: 30/09/2026(UTC)Updated: 30/09/2026(UTC)Translated: 30/09/2026(UTC)NVD NIST

Summary

OpenSave through version 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.

Risk Assessment

An attacker can read and write files in arbitrary locations on the server, potentially leading to data confidentiality breaches and potential code execution.

Recommendation

Upgrade OpenSave to a version newer than 2.4.0 that includes the path validation fix.

Other vulnerabilities in OpenSave

CVE-2026-103397Medium
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.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS