CVE-2026-107448

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.

CVSS v3 3.4 LOW

3.4^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md
https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md

Configurations

No configuration.

History

10 Oct 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md -~~	() https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md -

08 Oct 2026, 04:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 04:17

Updated : 2026-10-10 03:17

NVD link : CVE-2026-107448

Mitre link : CVE-2026-107448

CVE.ORG link : CVE-2026-107448

JSON object : View

Products Affected

No product.

CWE

CWE-99

Improper Control of Resource Identifiers ('Resource Injection')

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