CVE-2026-54551 Details
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.
A vulnerability in WireGuard Portal (wg-portal) versions 2.2.0 prior to 2.3.0 allows authenticated users to access unauthorized traffic statistics through the WebSocket API. The affected WebSocket endpoint broadcasts live traffic data for all peers and interfaces without proper per-user authorization. This oversight enables low-privilege users to enumerate peer public keys and monitor traffic metrics for peers belonging to other users. Additionally, the WebSocket exposes interface statistics and names, which are restricted to administrators via the REST API. The vulnerability arises because the WebSocket handler does not validate user access rights, unlike other API endpoints. Tunnel content, AllowedIPs, and user identities remain protected by authorization requirements.
Users can upgrade to WireGuard Portal version 2.3.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 17, 2026CISA-ADP
Assessed Sep 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/h44z/wg-portal/commit/316f389f11f3129f8603fcf3014fa7f19d7b3273 | [email protected] | Source CodeVendor |
| https://github.com/h44z/wg-portal/releases/tag/v2.3.0 | [email protected] | Release NotesVendor |
| https://github.com/h44z/wg-portal/security/advisories/GHSA-r45j-3jxf-wgfr | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| h44z wg-portal | >= 2.2.0, <= 2.2.3 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 21, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2026 | New CVE Received | [email protected] |