CVE-2026-27899 describes a critical privilege escalation vulnerability in WireGuard Portal (wg-portal) versions prior to 2.1.3. An authenticated non-admin user can elevate their privileges to full administrator by sending a crafted PUT request to their user profile endpoint, setting "IsAdmin": true. This flaw, rated 8.8 HIGH (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), allows an attacker to gain complete control over the WireGuard VPN management portal with low attack complexity and no user interaction. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.1.3CPE matchmatch criteria | cpe:2.3:a:wgportal:wireguard_portal:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.