CVE-2026-54551 Missing authorization in wg-portal
Low-privilege users can view traffic statistics and interface details of other users via an unsecured WebSocket endpoint in WireGuard Portal.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54551?
CVE-2026-54551 is a medium-severity missing authorization vulnerability in h44z wg-portal, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
WireGuard Portal, or wg-portal, is a web-based configuration portal for WireGuard server management. From 2.2.0 until 2.3.0, the authenticated GET /api/v0/ws statistics WebSocket in internal/app/api/v0/handlers/endpoint_websocket.go subscribes to TopicPeerStatsUpdated and TopicInterfaceStatsUpdated and forwards every TrafficDelta event without per-user authorization in handleWebsocket(). A low-privilege user can enumerate peer public keys through EntityId and monitor BytesReceived and BytesTransmitted values for peers belonging to other users. The same connection exposes interface_stats and interface names that the REST API limits to administrators. Tunnel content, AllowedIPs, and user identities remain authorization-gated. This issue is fixed in version 2.3.0.
Weakness: CWE-285
Which versions are affected by CVE-2026-54551?
How do I fix CVE-2026-54551?
No fix has been published for CVE-2026-54551 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54551 being exploited?
There is no known exploitation of CVE-2026-54551 in the wild and no public exploit code.
Sources
Also known as GHSA-r45j-3jxf-wgfr.