This security update for SiteStudio 1.6 Final and 1.6 Patch 1 fixes XSS vulnerability in SiteStudio Guestbook.

To apply the security update:

Standalone SiteStudio on Linux/BSD:

Note: You must perform these actions under the account your SiteStudio is run under.

1. Enter the SiteStudio directory:

cd /home/SiteStudio

2. Run the script:

   sh ./patch-gb-ss1.6.sh

3. Restart SiteStudio.

SiteStudio integrated with H-Sphere

Note: You must perform these actions under the cpanel account.

1. Enter the SiteStudio directory:

cd /hsphere/shared/SiteStudio

2. Run the script:

   sh ./patch-gb-ss1.6.sh

3. Restart H-Sphere under root.
4. Restart imaker.sh:

   /hsphere/shared/SiteStudio/imaker.sh restart

For SiteStudio on Windows®:

1. Change into the directory studio/WEB-INF/classes in the SiteStudio directory.
2. Create the directory psoft/guestbook.
3. Restart SiteStudio.

Special thanks to Donnie Werner of exploitlabs.com for finding this vulnerability and notifying us!