{"id":"CVE-2026-107448","aliases":["EUVD-2026-94696","GHSA-25hq-wqc9-cgfc"],"status":"published","title":"Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later...","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.","severity":{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00202,"percentile":0.1032,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-99"],"published":"2026-10-08T03:57:54Z","modified":"2026-10-10T03:17:07Z","products":[{"vendor":"wizards of the coast","product":"magic: the gathering arena"}],"references":[{"url":"https://github.com/N0tMilk/vulnerability-research/blob/main/Magic/carousel-shellexecute-mtga.md","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107448"},{"url":"https://github.com/advisories/GHSA-25hq-wqc9-cgfc"}],"sources":{"cve":[{"id":"CVE-2026-107448","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.","status":"published","published":"2026-10-08T03:57:54.878Z","modified":"2026-10-10T02:56:06.772Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-99"],"updated_at":"2026-11-02T13:45:14.072357Z"}],"euvd":[{"id":"EUVD-2026-94696","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.","status":"published","published":"2026-10-08T03:57:54Z","modified":"2026-10-10T02:56:06Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T17:27:24.157251Z"}],"ghsa":[{"id":"GHSA-25hq-wqc9-cgfc","title":"Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later...","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.","status":"published","published":"2026-10-08T06:31:17Z","modified":"2026-10-08T06:31:17Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-99"],"updated_at":"2026-11-02T15:12:55.932488Z"}],"nvd":[{"id":"CVE-2026-107448","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.","status":"published","published":"2026-10-08T04:17:19.64Z","modified":"2026-10-10T03:17:07.04Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-99"],"updated_at":"2026-11-02T14:12:55.142936Z"}]}}