URL field in profile => 403 error when filling

[Philooo]

Since years I have URL fileds in the profile of members (facebook, website, instagram ...)

One member notified me that there is a problem when filling one of the "URL" field => it gaves a 403 error
I verified with a fake pseudo, the same.
I also verified with admin pseudo, no 403 error

I created a NEW URL profile, it is the same

Any idea ? 

[Philooo]

NEW URL field. Sorry ...

[Philooo]

[Randy Calvert]

That is not coming from the IPB software. Either something on your server is blocking this or you have a WAF that is blocking the request.  If you are using cloudflare, you might need to try disabling it. (If it works, you need to see what rule is triggering it and disable the rule or tune it to ignore profile pages.)

[Marc]

Things like modsecurity are another common cause of this