https://seclists.org/oss-sec/2026/q2/632: On the issue of MIME handlers that execute arbitrary code (e.g. Wine)
Published May 20, 2026
·Updated
Affected Software
10 affected components
Gnome GLib
Gnome gio
freedesktop.org xdg-desktop-portal
Flatpak flatpak-xdg-utils
freedesktop.org xdg-utils
freedesktop.org xdg-open
debian/mailcap
Mozilla Firefox
Google Chromium
Winehq Wine
Frequently Asked Questions
1
What is the severity of CVE-2026-XXXX?
The severity of CVE-2026-XXXX is currently classified as critical due to its potential to allow execution of arbitrary code.
2
How do I fix CVE-2026-XXXX?
To fix CVE-2026-XXXX, update to the latest version of affected software, ensuring that all MIME handlers are properly configured.
3
What systems are affected by CVE-2026-XXXX?
CVE-2026-XXXX affects systems using Gnome GLib, Gnome gio, freedesktop.org xdg-desktop-portal, Flatpak flatpak-xdg-utils, freedesktop.org xdg-utils, and Mozilla Firefox.
4
What type of vulnerability is CVE-2026-XXXX?
CVE-2026-XXXX is a vulnerability related to MIME handlers that may execute arbitrary code during file opening.
5
Are there any workarounds for CVE-2026-XXXX?
Yes, temporarily disabling MIME handlers or using alternative software for file opening can serve as a workaround for CVE-2026-XXXX.