Permissions, Privileges, and Access Controls
The default configuration of the forum package in eZ publish 3.5 before 3.5.5, 3.6 before 3.6.2, 3.7 before 3.7.0rc2, and 3.8 before 20050818 does not restrict edit permissions to a posting's owner, which allows remote authenticated users to edit arbitrary postings.
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.