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CVE-2026-54551— WireGuard Portal: Authenticated WebSocket /api/v0/ws broadcasts all peers' and interfaces' traffic stats to every user (missing per-user authorization)

Quick assessment

Affected
h44z wg-portal
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WireGuard 门户（wg-portal）是一个用于 WireGuard 服务器管理的基于 Web 的配置门户。从版本 2.2.0 至 2.3.0，位于 中的已认证 统计信息 WebSocket 端点，在 函数中订阅了 和 主题，并转发所有 事件，但未实施基于用户的授权检查。 这使得低权限用户能够通过 枚举其他用户的对等节点（peer）的公钥，并监控属于其他用户的对等节点的 （接收字节数）和 （发送字节数）数值。此外，该 WebSocket 连接还暴露了 REST API 原本仅对管理员开放的 （接口统计信息）

CVSS 4.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
h44z wg-portal >= 2.2.0, < 2.3.0 affected
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I. Basic Information for CVE-2026-54551

Vulnerability Information
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Vulnerability Title
WireGuard Portal: Authenticated WebSocket /api/v0/ws broadcasts all peers' and interfaces' traffic stats to every user (missing per-user authorization)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
h44z wg-portal >= 2.2.0, < 2.3.0 -

II. Public POCs for CVE-2026-54551

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III. Intelligence Information for CVE-2026-54551

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Patches & Fixes for CVE-2026-54551 (1)

Vendor Advisories for CVE-2026-54551 (1)

Vendor Pages for CVE-2026-54551 (1)

IV. Related Vulnerabilities

Same product: wg-portal
Same vendor: h44z
Same weakness: CWE-285

V. Comments for CVE-2026-54551

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