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So what are you saying, that only some boards and configurations are vulnerable?
Users should not be required to comb through the code and set up test cases to determine whether vulnerabilities apply to them. These issues were reported by users as potential security issues and developers agreed that they were bugs in phpbb. If they are not in fact security bugs, a clear statement of what the impact of each of them is and who is affected or potentially affected by them, made by developers, would in my mind go a long way toward assuring me that my board is secure.