Is CVE-2026-27899 actively exploited?

No active exploitation of CVE-2026-27899 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27899 be exploited remotely?

Yes. CVE-2026-27899 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27899?

CVE-2026-27899 has a CVSS score of 8.8 (HIGH) and an EPSS exploitation probability of 0.07%.

HOME VULNERABILITIESCVE-2026-27899

HIGH

CVE-2026-27899

CWE-269Published: February 26, 2026· Updated: Mar 2, 2026

8.8

CVSS v3.1

EPSS:0.07%probability of exploitation in 30 daysPercentile:20.5th

Official Description

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 endpoint with `"IsAdmin": true` in the JSON body. After logging out and back in, the session picks up admin privileges from the database. When a user updates their own profile, the server parses the full JSON body into the user model, including the `IsAdmin` boolean field. A function responsible for preserving calculated or protected attributes pins certain fields to their database values (such as base model data, linked peer count, and authentication data), but it does not do this for `IsAdmin`. As a result, whatever value the client sends for `IsAdmin` is written directly to the database. After the exploit, the attacker has full admin access to the WireGuard VPN management portal. The problem was fixed in v2.1.3. The docker images for the tag 'latest' built from the master branch also include the fix.

NVD Source

Technical Analysis

CVE-2026-27899 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.