trunk.cocoapods.org is the authentication server for the CoacoaPods dependency manager. A vulnerability affected older pods which migrated from the pre-2014 pull request workflow to trunk. If the pods had never been claimed then it was still possible to do so. It was also possible to have all owners removed from a pod, and that made the pod available for the same claiming system. This was patched server-side in commit 71be5440906b6bdfbc0bcc7f8a9fec33367ea0f4 in September 2023.
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
Resources such as files and directories may be inadvertently exposed through mechanisms such as insecure permissions, or when a program accidentally operates on the wrong object. For example, a program may intend that private files can only be provided to a specific user. This effectively defines a control sphere that is intended to prevent attackers from accessing these private files. If the file permissions are insecure, then parties other than the user will be able to access those files. A separate control sphere might effectively require that the user can only access the private files, but not any other files on the system. If the program does not ensure that the user is only requesting private files, then the user might be able to access other files on the system. In either case, the end result is that a resource has been exposed to the wrong party.