CVE-2011-4850: Parallels Plesk Panel

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 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 help.php and certain other files.

Affected products

• Parallels Parallels Plesk Panel: version 10.4.4_build20111103.18 only

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