h44z wg-portal up to 2.2.x WebSocket endpoint_websocket.go handleWebsocket privileges management

Summaryinfo

A vulnerability categorized as problematic has been discovered in h44z wg-portal up to 2.2.x. Affected by this issue is the function handleWebsocket of the file internal/app/api/v0/handlers/endpoint_websocket.go of the component WebSocket Handler. The manipulation results in privileges management. This vulnerability was named CVE-2026-54551. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in h44z wg-portal up to 2.2.x. Affected is the function handleWebsocket of the file internal/app/api/v0/handlers/endpoint_websocket.go of the component WebSocket Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-54551 since 06/15/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 2.3.0 eliminates this vulnerability.

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Productinfo

Vendor

• h44z

Name

• wg-portal

Version

• 2.0
• 2.1
• 2.2

Website

• Product: https://github.com/h44z/wg-portal/

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