CVE-2006-0299: Mozilla Firefox

Medium severity, CVSS 6.4. EPSS: 2% chance of exploitation in the next 30 days.

The E4X implementation in Mozilla Firefox before 1.5.0.1, Thunderbird 1.5 if running Javascript in mail, and SeaMonkey before 1.0 exposes the internal "AnyName" object to external interfaces, which allows multiple cooperating domains to exchange information in violation of the same origin restrictions.

Affected products

• Mozilla Firefox: version 1.5 only
• Mozilla Seamonkey: version 1.0 only
• Mozilla Thunderbird: version 1.5 only

Published 2006-02-02. Last modified 2026-06-16.