XF 1.1 error 403 "forbidden" on specific keyword

[Kintaro]

One of my users noticed that searching for a specific keyword make the server respond with a 403 error.

The website
The word is "curl".

I'm going to try to rebuild the search index... but I don't think this is the problem.

 

[Kintaro]

ok, it seem a problem with the mod_security of Apache

 

[Digital Doctor]

ok, it seem a problem with the mod_security of Apache

It's a common problem for those using mod_security.
Try:

wget
ping
ftp
sftp

See if using curl in a title is an issue.

It's easier to run Xenforo with mod_security off, which is of course, less secure.

The problem is probably from CURL in php.

http://php.net/manual/en/book.curl.php