CVE-2010-1990: Mozilla Firefox

Medium severity, CVSS 5.0. EPSS: 2.1% chance of exploitation in the next 30 days.

Mozilla Firefox 3.6.x, 3.5.x, 3.0.19, and earlier, and SeaMonkey, executes a mail application in situations where an IFRAME element has a mailto: URL in its SRC attribute, which allows remote attackers to cause a denial of service (excessive application launches) via an HTML document with many IFRAME elements.

Affected products

• Mozilla Firefox: version 3.6.1 only; version 3.6.2 only; version 3.6.3 only; version 3.5.1 only; version 3.5.2 only; version 3.5.3 only; …
• Mozilla Seamonkey: any version

Published 2010-05-20. Last modified 2026-06-16.