{"id":"CVE-2026-107448","revision":"a462d14d33614e5fa8a34f62ae855b31","records":[{"revision":"a462d14d33614e5fa8a34f62ae855b31","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107448","aliases":[],"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.Op…","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.","state":0,"publishedAt":"2026-10-08T03:57:54.878+00:00","modifiedAt":"2026-10-10T02:56:06.772+00:00","affected":[{"ecosystem":"Vendor product","name":"Magic: The Gathering Arena","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unknown\",\n                    \"platforms\": [\n                        \"Windows\"\n                    ],\n                    \"product\": \"Magic: The Gathering Arena\",\n                    \"vendor\": \"Wizards of the Coast\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2026.59.30.12801.127931.6\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","score":3.4,"severity":"LOW"}],"references":["https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107448","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107448","identifiers":["CVE-2026-107448"]},"retained":false,"historicalAffected":[]}],"coverage":[]}