All vulnerabilities
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

Wizards of the Coast Magic: The Gathering Arena
Open in ThreatlineRecord JSON
CVSS
3.4Low
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 10 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published8 Oct 2026Updated 10 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

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.

Text from CVE List

Affected versions 1

  • Magic: The Gathering Arenaaffected: 2026.59.30.12801.127931.6CVE List

References 1