Unicode characters in get string breaks pagination

[jessepearson]

This was found when working with this plugin: [Ajax-Enabled Enhanced Layered Navigation](​https://woocommerce.com/products/ajax-layered-navigation/) .

If there are unicode characters used in a parameter in a get string, then it breaks pagination by not allowing access to page 2+.

1. Set your blog posts to display 1 per page
2. View blog
3. Append this to the url in address bar and hit enter: ?dddd%D7%99%D7%A6%D7%A8%D7%9F=metabo
4. Once page reloads, try to go to page 2
5. You should receive a too many redirects error

[subrataemfluence]

You have mentioned the use of a WooCommerce plugin.
Are you able to regenerate the same issue without this plugin activated on your system on a clean WordPress install? Does your pagination still break?

If something is broken or not working the desired way it is advisable to first try to reproduce the same with a clean WordPress install and without any contributed plugin / theme being activated.

If the above test cannot reproduce the issue and can again be produced with the contributed plugin/theme activated, then that issue could not be considered as a core WordPress bug and it is more likely that the plugin/theme is responsible for this.

Would you mind try to reproduce the pagination issue using a clean install? If the behavior can still be reproduced please reopen the ticket and describe the exact steps you used for in a fresh WordPress install to bring up the issue.

Thank you!

[jessepearson]

Sorry I didn't mention testing this on a clean install beforehand, but I did. The exact steps to reproduce were already listed.

[subrataemfluence]

Thanks for reopening the ticket.

I confirm the issue can be reproduced on a fresh WP install and without any contributed theme/plugin activated.

However, just curious to know about a use case where we can have a character like %D7%99%D7%A6%D7%A8%D7%9F in the URL.

[jessepearson]

In the instance where this was found the user is using WooCommerce and has attributes that have names that are Hebrew characters, and the additional plugin allows filtering of these attributes. The filtering creates a request url like ?filter_attribute=value. So, in this instance, this is what they are getting: ?filter_יצרן=metabo.