Fix ticket read no right message

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [unrelease] -
 
+### Fixed
+
+- Redirect users without ticket rights after escalation.
+
 ## [2.9.10] - 2024-11-27
 
 ### Fixed

front/ticket.form.php

@@ -86,6 +86,15 @@
             ) . $_POST['comment']
         ]);
     }
+
+    if (!$track->can($_POST["tickets_id"], READ)) {
+        Session::addMessageAfterRedirect(
+            __('You have been redirected because you no longer have access to this ticket'),
+            true,
+            ERROR
+        );
+        Html::redirect($CFG_GLPI["root_doc"] . "/front/ticket.php");
+    }
 }
 
 Html::back();