An update for WP Super Cache was recently released to address a nasty XSS security vulnerability and it is recommended that you update as soon as possible.
The latest version is 1.4.4. but this particular issue was resolved in 1.4.3.
You can download the latest version or view the changelog of the latest release here:
https://wordpress.org/plugins/wp-super-cache/changelog/ If you do not use wordpress, or you do not have the WP Super Cache plugin installed, you may disregard this notice.
- Wednesday, April 8, 2015