CVE-2026-103397
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb
- https://github.com/Liquid-co/OpenSave
- https://github.com/Liquid-co/OpenSave/blob/v2.3.1/internal/p2p/wanclient_handlers.go#L268-L282
- https://github.com/Liquid-co/OpenSave/commit/2f2612b13233ac123e01a03cb3008c44bacaeae3
- https://www.vulncheck.com/advisories/opensave-before-2.4.0-beta.1-authentication-bypass-via-spoofed-relay-sender
CWEs
CWE-290
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.