CVE-2007-0801: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 1.9% chance of exploitation in the next 30 days.

The nsExternalAppHandler::SetUpTempFile function in Mozilla Firefox 1.5.0.9 creates temporary files with predictable filenames based on creation time, which allows remote attackers to execute arbitrary web script or HTML via a crafted XMLHttpRequest.

Affected products

• Mozilla Firefox: version 1.5.0.9 only

Published 2007-02-07. Last modified 2026-06-16.