https://seclists.org/oss-sec/2026/q2/610: On the issue of MIME handlers that execute arbitrary code (e.g. Wine)
Published May 19, 2026
·Updated
Affected Software
8 affected components
sensible-browser
freedesktop.org xdg-open
lilypond lilypond
Mozilla Firefox
Mozilla Thunderbird
Stellarium Stellarium
kitty
Winehq Wine
Frequently Asked Questions
1
What is the severity of CVE-2026-XXXX?
CVE-2026-XXXX has a high severity rating due to its potential for arbitrary code execution.
2
How do I fix CVE-2026-XXXX?
To fix CVE-2026-XXXX, avoid setting handlers that execute commands or scripts automatically from downloaded files.
3
Which software is affected by CVE-2026-XXXX?
CVE-2026-XXXX affects software including Mozilla Firefox, Thunderbird, Wine, and others that use MIME handlers.
4
What exploits are possible with CVE-2026-XXXX?
CVE-2026-XXXX can lead to unauthorized code execution if a user accidentally opens a malicious file.
5
How can users mitigate the risks of CVE-2026-XXXX?
Users can mitigate the risks of CVE-2026-XXXX by configuring their systems to prompt for action instead of executing code automatically.