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Please read Built-in SQL console
Saving Custom Field Configuration XSRF Warning
If a edited custom field is saved t the this Jira alert screen may be displayed:
Workaround:
This looks like a Jira issue reported here with instructions for fixing it.
The XSRF threats are indented to cheat Jira admins by embedding Jira pages in third-party malicious servers. So, if this message is displayed but you are sure you were performing a legit action right within Jira then you may want to click on the "Retry Operation" button to go forward with your action.
For the rest
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