CVE-2008-1240: Mozilla Firefox

Medium severity, CVSS 5.0. EPSS: 3.2% chance of exploitation in the next 30 days.

LiveConnect in Mozilla Firefox before 2.0.0.13 and SeaMonkey before 1.1.9 does not properly parse the content origin for jar: URIs before sending them to the Java plugin, which allows remote attackers to access arbitrary ports on the local machine. NOTE: this is closely related to CVE-2008-1195.

Affected products

• Mozilla Firefox: up to and including 2.0.0.12
• Mozilla Seamonkey: up to and including 1.1.8

Published 2008-03-28. Last modified 2026-06-16.