CVE-2026-107448 Other in Magic: The Gathering Arena
Attackers controlling server content can invoke arbitrary URI handlers on client machines, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-107448?
CVE-2026-107448 is a low-severity vulnerability in Wizards of the Coast Magic: The Gathering Arena, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-99
Which versions are affected by CVE-2026-107448?
How do I fix CVE-2026-107448?
No fix has been published for CVE-2026-107448 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-107448 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107448 exists.
Sources
Also known as GHSA-25hq-wqc9-cgfc.