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MEDIUM severity

WireGuard Portal v2 has Open Redirect Vulnerability in OAuth Authentication FlowGHSA-grh9-37g7-53mj

MEDIUMFix: h44z/wg-portal@e62db0d

GHSA-grh9-37g7-53mj is a medium-severity (CVSS 6.1) vulnerability in github.com/h44z/wg-portal. A fix is available for github.com/h44z/wg-portal — see the affected versions and patch details below.

Also known asGO-2026-4398
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Feb 5, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐹github.com/h44z/wg-portal

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Summary

An Open Redirect vulnerability exists in the OAuth authentication flow that allows attackers to redirect users to external malicious websites after authentication. The vulnerability is caused by insufficient validation of the return parameter in the OAuth login initialization endpoint.

Patches

The problem was fixed in the latest release, v2.1.2. The docker images for the tag 'latest' built from the master branch also include the fix.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/h44z/wg-portalall versions2.1.2go get github.com/h44z/wg-portal@v2.1.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/h44z/wg-portal, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/h44z/wg-portal to 2.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-grh9-37g7-53mj is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

### Summary An Open Redirect vulnerability exists in the OAuth authentication flow that allows attackers to redirect users to external malicious websites after authentication. The vulnerability is caused by insufficient validation of the return parameter in the OAuth login initialization endpoint. ### Patches The problem was fixed in the latest release, v2.1.2. The [docker images](https://hub.docker.com/r/wgportal/wg-portal) for the tag 'latest' built from the master branch also include the fix.
O3 Security · Impact-Aware SCA

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WireGuard Portal v2 has Open Redirect Vulnerability in…