diff --git a/application/controllers/Cis/OtherLvPlan.php b/application/controllers/Cis/OtherLvPlan.php
index 3fbe3e91a..c657ec3d2 100644
--- a/application/controllers/Cis/OtherLvPlan.php
+++ b/application/controllers/Cis/OtherLvPlan.php
@@ -14,7 +14,7 @@ class OtherLvPlan extends Auth_Controller
     public function __construct()
     {
         parent::__construct([
-            'index' => ['basis/cis:r']
+            'index' => ['basis/other_lv_plan:r']
         ]);
 
         // Load Config
diff --git a/application/controllers/api/frontend/v1/LvPlan.php b/application/controllers/api/frontend/v1/LvPlan.php
index fa70e919a..99dc8bf59 100644
--- a/application/controllers/api/frontend/v1/LvPlan.php
+++ b/application/controllers/api/frontend/v1/LvPlan.php
@@ -98,6 +98,11 @@ class LvPlan extends FHCAPI_Controller
 		$end_date = $this->input->post('end_date', true);
 		$uid = $this->input->post('uid', true);
 
+		// disallow accessing other user's lv plan if missing permission
+		if ($uid && $uid !== getAuthUID() && !$this->permissionlib->isBerechtigt('basis/other_lv_plan')) {
+			$this->terminateWithError("Missing permission to view other users' timetables!");
+		}
+
 		// fetching lvplan events
 		$result = $this->stundenplanlib->getEventsUser($start_date, $end_date, $uid);
 		$lvplanEvents = $this->getDataOrTerminateWithError($result);