{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.2.0"
              },
              {
                "fixed": "2.3.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "b553375c435a41d807541c209d5489db6d16c070"
            },
            {
              "fixed": "316f389f11f3129f8603fcf3014fa7f19d7b3273"
            },
            {
              "fixed": "9dc87dda4f4595952d3bbaf685a8075eb1df68f9"
            }
          ],
          "repo": "https://github.com/h44z/wg-portal",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r45j-3jxf-wgfr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54551.json"
  },
  "details": "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.",
  "id": "CVE-2026-54551",
  "modified": "2026-09-19T03:30:57.065996380Z",
  "published": "2026-09-17T17:10:53.435Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/h44z/wg-portal/releases/tag/v2.3.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54551.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/h44z/wg-portal/security/advisories/GHSA-r45j-3jxf-wgfr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54551"
    },
    {
      "type": "FIX",
      "url": "https://github.com/h44z/wg-portal/commit/316f389f11f3129f8603fcf3014fa7f19d7b3273"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WireGuard Portal: Authenticated WebSocket /api/v0/ws broadcasts all peers' and interfaces' traffic stats to every user (missing per-user authorization)"
}