[6.0] Prohibited input U+0000005C

[janschoenherr]

Steps to reproduce the issue

When entering the following string into an article and trying to save. An exception is thrown.

"mailto:dummy@dummydomain.com\"

This is seemingly caused by the backslash before the quote.

This can happen if you have markup stored in json:

{"content":"<p>Email: <a href=\\"mailto:dummy@dummydomain.com\\">dummy@dummydomain.com<\\/a><\\/p>"}

Expected result

No error should be thrown.

Actual result

An exception with Prohibited input U+0000005C is thrown.

System information (as much as possible)

Joomla 6.0

Additional comments

In previous Joomla versions (e.g. 5.4.0) this did not happen.

[brianteeman]

Confirmed.

Stack trace

#	Function	Location
1	()	JROOT\libraries\vendor\algo26-matthias\idna-convert\src\NamePrep\NamePrep.php:75
2	Algo26\IdnaConvert\NamePrep\NamePrep->applyCharacterMaps()	JROOT\libraries\vendor\algo26-matthias\idna-convert\src\NamePrep\NamePrep.php:52
3	Algo26\IdnaConvert\NamePrep\NamePrep->do()	JROOT\libraries\vendor\algo26-matthias\idna-convert\src\Punycode\ToPunycode.php:35
4	Algo26\IdnaConvert\Punycode\ToPunycode->convert()	JROOT\libraries\vendor\algo26-matthias\idna-convert\src\ToIdn.php:58
5	Algo26\IdnaConvert\ToIdn->convert()	JROOT\libraries\src\String\PunycodeHelper.php:44
6	Joomla\CMS\String\PunycodeHelper::toPunycode()	JROOT\libraries\src\String\PunycodeHelper.php:213
7	Joomla\CMS\String\PunycodeHelper::emailToPunycode()	JROOT\libraries\src\Filter\InputFilter.php:155
8	Joomla\CMS\Filter\InputFilter->emailToPunycode()	JROOT\libraries\src\Component\ComponentHelper.php:129
9	Joomla\CMS\Component\ComponentHelper::filterText()	JROOT\libraries\src\Form\FormField.php:1119
10	Joomla\CMS\Form\FormField->filter()	JROOT\libraries\src\Form\Form.php:1058
11	Joomla\CMS\Form\Form->filter()	JROOT\libraries\src\Form\Form.php:1002
12	Joomla\CMS\Form\Form->process()	JROOT\libraries\src\MVC\Model\FormModel.php:219
13	Joomla\CMS\MVC\Model\FormModel->validate()	JROOT\administrator\components\com_content\src\Model\ArticleModel.php:640
14	Joomla\Component\Content\Administrator\Model\ArticleModel->validate()	JROOT\libraries\src\MVC\Controller\FormController.php:636
15	Joomla\CMS\MVC\Controller\FormController->save()	JROOT\libraries\src\MVC\Controller\BaseController.php:730
16	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT\libraries\src\Dispatcher\ComponentDispatcher.php:143
17	Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch()	JROOT\libraries\src\Component\ComponentHelper.php:361
18	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT\libraries\src\Application\AdministratorApplication.php:150
19	Joomla\CMS\Application\AdministratorApplication->dispatch()	JROOT\libraries\src\Application\AdministratorApplication.php:205
20	Joomla\CMS\Application\AdministratorApplication->doExecute()	JROOT\libraries\src\Application\CMSApplication.php:320
21	Joomla\CMS\Application\CMSApplication->execute()	JROOT\administrator\includes\app.php:58
22	require_once()	JROOT\administrator\index.php:32

[uglyeoin]

101 Prohibited input U+0000005C

I'm getting this too, but it wasn't related to an email, I was working in YooTheme when it occured, I wasn't doing anything email related. I'm also not 100% sure how to replicate the issue but it has occured 2-3 times now.

YooTheme stores it's config in JSON files so I assume that could be related perhaps.

[woluweb]

Same issue here:

• I only wanted to edit the Title of the Article in the backend
• the Content of the Article is made with YOOtheme builder
• ... and I get a 101 Prohibited input U+0000005C when trying to Save (and the change is not saved. I mention it because sometimes you get an error thrown after saving as such)

  ---

  _{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46356.}

[brianteeman]

so did you report it to youtheme?

[woluweb]

Yep, just did it.
But the issue also seems to be broader than this, as in the case of @janschoenherr above.

[richard67]

Closing as having a pull request. See #46450 .