Permissions, Privileges, and Access Controls
The Send by e-mail sub-module in the Print (aka Printer, e-mail and PDF versions) module 5.x before 5.x-4.9 and 6.x before 6.x-1.9, a module for Drupal, does not properly enforce privilege requirements, which allows remote attackers to read page titles by requesting a "Send to friend" form.
CWE-264 - Permissions Privileges and Access Controls
CWE 264 (permissions, privileges, and access controls) is not a weakness in and of itself, rather it is a category of weaknesses related to the management of permissions, privileges, and other security features used to perform access control. If not addressed, the weaknesses in this category allow attackers to gain privileges for an unintended sphere of control, access sensitive information, and execute arbitrary commands.