Validate CSV Separator - #3569
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aaronskiba
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Oct 6, 2025
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Fixes CSV separators not being validated.
Changes proposed in this PR:
usage_controllerto validate that the provided CSV field separator is a safe, predefined character./usage_yearly_users?sep=%2c%3dcmd|' /C+powershell'!A0++pbiqhcould embed a malicious formula into the downloaded CSV. When opened in spreadsheet software (like Excel), it could trigger command execution under certain conditions.