---
id: CVE-2026-107448
title: >-
  Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6
  and certain later 2026.60.x builds) passes a server-supplied URL from a
  home-screen carousel GoToExternalUrl action directly to the Windows shell via
  Application…
summary: >-
  Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6
  and certain later 2026.60.x builds) passes a server-supplied URL from a
  home-screen carousel GoToExternalUrl action directly to the Windows shell via
  Application…
severity: low
cvss: 3.4
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N'
cwe:
  - CWE-99
vendor: Wizards of the Coast
product: 'Magic: The Gathering Arena'
affected:
  - magic_the_gathering_arena 2026.59.30.12801.127931.6
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T04:17:19.640'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107448'
references:
  - url: >-
      https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-08T04:04:32.117Z'
---

## Overview

Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later 2026.60.x builds) passes a server-supplied URL from a home-screen carousel GoToExternalUrl action directly to the Windows shell via Application.OpenURL/ShellExecuteW without validating the URI scheme or domain. A hypothetical attacker able to control the carousel content delivered to clients can cause arbitrary registered URI-scheme handlers to be invoked on client hosts with no user interaction. For example, one might expect that the carousel content only has https: URIs, not ms-calculator: URIs.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.