Bypass fix in https://hackerone.com/reports/151516 report.

How it was found

Hi.

Steps to reproduce:

1. The same in previous https://hackerone.com/reports/151516 report.
2. But payload to bypass your fix would be like this: ;=cmd|' /C calc'!A0

Solution:

1. Add ; in your escape function esc_csv() on line 2858 of camptix.php

References:

1. https://www.owasp.org/index.php/CSV_Excel_Macro_Injection

Tested on Windows 7 64 + Microsoft Office Exel 2003(think will work and on later versions)

Regards.