title: Campaign Monitor Forms < 2.5.6 - Subscriber+ Arbitrary Options Update
description: The Campaign Monitor Forms by Optin Cat WordPress plugin before 2.5.6 does not prevent users with low privileges (like subscribers) from overwriting any options on a site with the string "true", which could lead to a variety of outcomes, including DoS.
problem types: CWE-284 Improper Access Control
affected:
{
vendor: Unknown
product: Campaign Monitor Forms by Optin Cat
versions:
status: affected, versionType: custom, version: 0, lessThan: 2.5.6
defaultStatus: unaffected
collectionURL: https://wordpress.org/plugins
}