CVE-2011-4756: Parallels Plesk Small Business Panel

Medium severity, CVSS 5.0. EPSS: 1.1% chance of exploitation in the next 30 days.

Parallels Plesk Small Business Panel 10.2.0 does not include the HTTPOnly flag in a Set-Cookie header for a cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie, as demonstrated by cookies used by domains/sitebuilder_edit.php and certain other files.

Affected products

• Parallels Parallels Plesk Small Business Panel: version 10.2.0 only

Published 2011-12-16. Last modified 2026-06-16.