CVE-2015-3439: Debian Linux

Medium severity, CVSS 4.3. EPSS: 5.1% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the Ephox (formerly Moxiecode) plupload.flash.swf shim 2.1.2 in Plupload, as used in WordPress 3.9.x, 4.0.x, and 4.1.x before 4.1.2 and other products, allows remote attackers to execute same-origin JavaScript functions via the target parameter, as demonstrated by executing a certain click function, related to _init.as and _fireEvent.as.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• WordPress WordPress: version 3.9.0 only; version 3.9.1 only; version 3.9.2 only; version 3.9.3 only; version 4.0 only; version 4.0.1 only; …

Published 2015-08-05. Last modified 2026-06-17.