Permissions, Privileges, and Access Controls
PaperThin CommonSpot before 7.0.2 and 8.x before 8.0.3 allows remote attackers to bypass intended access restrictions via a '\0' character, as demonstrated by using this character within a pathname on the drive containing the web root directory of a ColdFusion installation.
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.