CVE-2007-4039: Mozilla

Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days.

Argument injection vulnerability involving Mozilla, when certain URIs are registered, allows remote attackers to conduct cross-browser scripting attacks and execute arbitrary commands via shell metacharacters in an unspecified URI, which are inserted into the command line when invoking the handling process, a similar issue to CVE-2007-3670.

Affected products

• Mozilla Mozilla: any version

Published 2007-07-27. Last modified 2026-06-16.