CVE-2020-15513: Incorrect access control in typo3_forum

The vulnerability centers around broken access control in post creation. In TYPO3 MVC architecture, controller actions handle specific operations. The security advisory specifically mentions that 'anonymous users to create forum posts although this feature is disabled', which directly implicates the post creation endpoint. The most likely location for this missing authorization check would be in the PostController's createAction method, which would handle the post creation workflow. Without seeing the actual patch code, we base this on 1) the vulnerability description matching controller action functionality, and 2) standard TYPO3 extension patterns where access checks are implemented in controller actions.