# CVE-2026-27899: WireGuard Portal is Vulnerable to Privilege Escalation via User Self-Update to Admin Level

Source: https://junglewise.ai/threats/cve-2026-27899-wireguard-portal-is-vulnerable-to-privilege-escalation-via-user  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-10  
License: CC BY 4.0 with a link back

CVE-2026-27899 · Severity: low · CVSS 3.1 · Published 2026-03-10

WireGuard Portal is Vulnerable to Privilege Escalation via User Self-Update to Admin Level in github.com/h44z/wg-portal

Technologies: [github.com/h44z/wg-portal (Go)](https://junglewise.ai/threats/technologies/github-com-h44z-wg-portal). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-27899 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27899 being exploited in the wild.

**How severe is CVE-2026-27899?** Low severity, with a CVSS score of 3.1, published 10 March 2026.

**Which products and versions are affected?** github.com/h44z/wg-portal (Go) SEMVER:introduced=0, SEMVER:introduced=0,fixed=2.1.3.

**Is there a fix for CVE-2026-27899?** Yes. github.com/h44z/wg-portal (Go): upgrade to 2.1.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-27899?** Check whether you run github.com/h44z/wg-portal (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/h44z/wg-portal (Go): upgrade to 2.1.3 or later

  ```sh
  go get github.com/h44z/wg-portal@v2.1.3
  ```


## Affected products

- github.com/h44z/wg-portal (Go) SEMVER:introduced=0, SEMVER:introduced=0,fixed=2.1.3

## Identifiers

- CVE-2026-27899
- GHSA-5rmx-256w-8mj9
- GO-2026-4566

## Related threats

- [GO-2026-4398 - WireGuard Portal v2 has Open Redirect Vulnerability in OAuth Authentication Flow in github.com/h44z/wg-portal](https://junglewise.ai/threats/go-2026-4398-wireguard-portal-v2-has-open-redirect-vulnerability-in-710c6ee9)
- [WireGuard Portal v2 has Open Redirect Vulnerability in OAuth Authentication Flow](https://junglewise.ai/threats/wireguard-portal-v2-has-open-redirect-vulnerability-in-oauth-7f66d91c)
- [GO-2025-3371 - WireGuard Portal v2 Vulnerable to OAuth Insecure Redirect URI / Account Takeover in github.com/h44z/wg-portal](https://junglewise.ai/threats/go-2025-3371-wireguard-portal-v2-vulnerable-to-oauth-insecure-redirect-f166bb88)
- [WireGuard Portal v2 Vulnerable to OAuth Insecure Redirect URI / Account Takeover](https://junglewise.ai/threats/wireguard-portal-v2-vulnerable-to-oauth-insecure-redirect-uri-account-2e4d3ac7)