CVE-2026-27899 - Vulnerability Analysis

Overview

WireGuard Portal prior to 2.1.3 contains a broken access control vulnerability caused by improper handling of the IsAdmin field in user profile updates, letting authenticated non-admin users escalate to full admin privileges by sending a crafted PUT request, exploit requires user authentication.

Severity & Score

Impact

Authenticated users can escalate their privileges to full administrator, gaining complete control over the WireGuard management portal.

Mitigation

Update to version 2.1.3 or later.

References

• https://github.com/h44z/wg-portal/security/advisories/GHSA-5rmx-256w-8mj9

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Feb 26, 2026

🟠 CVE-2026-27899 - High (8.8) WireGuard Portal (or wg-portal) is a web-based configuration portal for WireGuard server management. Prior to version 2.1.3, any authenticated non-admin user can become a full administrator by sending a single PUT request to their own user profile... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-27899/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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