CVE-2009-1104: Sun Java

Medium severity, CVSS 5.8. EPSS: 2.2% chance of exploitation in the next 30 days.

The Java Plug-in in Java SE Development Kit (JDK) and Java Runtime Environment (JRE) 5.0 Update 17 and earlier; 6 Update 12 and earlier; and 1.4.2_19 and earlier does not prevent Javascript that is loaded from the localhost from connecting to other ports on the system, which allows user-assisted attackers to bypass intended access restrictions via LiveConnect, aka CR 6724331. NOTE: this vulnerability can be leveraged with separate cross-site scripting (XSS) vulnerabilities for remote attack vectors.

Affected products

• Sun Java: any version

Published 2009-03-25. Last modified 2026-06-16.