"Check if Already Posted" with special string in title triggers Forbidden

[photonxp]

I just entered the title for a post. The full title:

exec >./test

Then I clicked the button of "Check if already Posted" right beside the title field.
Post url:

https://ubuntuforums.org/search.php?...ss&forumchoice[]=331&titleonly=1&query=exec%20%3E%20./test

For some reason the server wasn't happy with what I entered and returned a Forbidden page:

Forbidden

You don't have permission to access /search.php on this server.

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Apache/2.4.7 (Ubuntu) Server at ubuntuforums.org Port 443

[slickymaster]

Can you please start the thread you intend with a more meaningful title. See the Posting Guidelines

As for the the issue you're getting, the culprit is the exec >./test part of that string.