# CVE-2026-54551: Missing authorization in wg-portal

> Low-privilege users can view traffic statistics and interface details of other users via an unsecured WebSocket endpoint in WireGuard Portal.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Sep 2026
- **Updated:** 21 Sep 2026
- **Also known as:** GHSA-r45j-3jxf-wgfr

## What is CVE-2026-54551?

CVE-2026-54551 is a medium-severity missing authorization vulnerability in h44z wg-portal, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-54551?


## How do I fix CVE-2026-54551?

No fix has been published for CVE-2026-54551 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54551 being exploited?

There is no known exploitation of CVE-2026-54551 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54551 and fix it if it is affected.

What it is: CVE-2026-54551 is a medium-severity missing authorization vulnerability in h44z wg-portal, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-54551 in the wild and no public exploit code.

Affected product: h44z wg-portal. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-54551/ (Markdown: https://insights.sbomify.com/CVE-2026-54551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54551
- OSV: https://osv.dev/vulnerability/CVE-2026-54551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54551/
Summaries are generated and may contain mistakes; the official description above is the record.