Take a newsitem and set publishing date as finished. Newsitems is no longer visible. OK sofar.

Go to the frontpage and select a Read More ... link on a newsitem.
Navigate till you arrive at the unpublished item. You now get the message :

You are not authorized to view this resource.
You need to login.

This is a longstanding bug since *4.5.1

Fonny

Got it.

In components/com_content/content.php near line 1057 add twice  '. $xwhere' to the sql query.

// loads the links for Next & Previous Button
if ( $params->get( 'item_navigation' ) ) {
$query = "SELECT a.id"
. "\n FROM #__content AS a"
. "\n WHERE a.catid = $row->catid"
. "\n AND a.state = $row->state"
. "\n AND ordering < $row->ordering"
. ($access->canEdit ? '' : "\n AND a.access <= $gid" )
. $xwhere
. "\n ORDER BY a.ordering DESC"
. "\n LIMIT 1"
;
$database->setQuery( $query );
$row->prev = $database->loadResult();

$query = "SELECT a.id"
. "\n FROM #__content AS a"
. "\n WHERE a.catid = $row->catid"
. "\n AND a.state = $row->state"
. "\n AND ordering > $row->ordering"
. ($access->canEdit ? '' : "\n AND a.access <= $gid" )
. $xwhere
. "\n ORDER BY a.ordering"
. "\n LIMIT 1"
;

fonny

Thanks, works great! 

Thanks ! I have made the change on SVN for bot 1.0 and 1.1