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CVE-2026-54551 (GCVE-0-2026-54551)

Vulnerability from cvelistv5 – Published: 2026-09-17 17:10 – Updated: 2026-09-17 17:10
VLAI
Title
WireGuard Portal: Authenticated WebSocket /api/v0/ws broadcasts all peers' and interfaces' traffic stats to every user (missing per-user authorization)
Summary
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.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
h44z wg-portal Affected: >= 2.2.0, < 2.3.0
guessed Create a notification for this product.
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        "discovery": "UNKNOWN"
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      "title": "WireGuard Portal: Authenticated WebSocket /api/v0/ws broadcasts all peers\u0027 and interfaces\u0027 traffic stats to every user (missing per-user authorization)"
    }
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    "dateReserved": "2026-06-15T19:04:14.456Z",
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            "value": "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."
          }
        ],
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        "metrics": {
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    }
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}



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