diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5cdc3f86..f38c2ff09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -69,6 +69,8 @@
 1. [](#new)
     * Added support for custom `FormFlash` save locations
     * Added a new `Utils::arrayLower()` method for lowercasing arrays
+    * Support new GRAV_BASEDIR environment variable [#2541](https://github.com/getgrav/grav/pull/2541)
+    * Allow users to override plugin handler priorities [#2165](https://github.com/getgrav/grav/pull/2165)
 1. [](#improved)
     * Use new `Utils::getSupportedPageTypes()` to enforce `html,htm` at the front of the list [#2531](https://github.com/getgrav/grav/issues/2531)  
     * Updated vendor libraries
diff --git a/system/router.php b/system/router.php
index 9ab055892..43571b354 100644
--- a/system/router.php
+++ b/system/router.php
@@ -17,11 +17,22 @@ if (is_file($_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . $_SERVER['SCRIPT_N
     return false;
 }
 
+$grav_index = 'index.php';
+
+/* Check the GRAV_BASEDIR environment variable and use if set */
+$grav_basedir = getenv('GRAV_BASEDIR') ?: '';
+
+if (isset($grav_basedir)) {
+    $grav_index = ltrim($grav_basedir, '/') . DIRECTORY_SEPARATOR . $grav_index;
+    $grav_basedir = DIRECTORY_SEPARATOR . trim($grav_basedir, DIRECTORY_SEPARATOR);
+    define('GRAV_ROOT', str_replace(DIRECTORY_SEPARATOR, '/', getcwd()) . $grav_basedir);
+}
+
 $_SERVER = array_merge($_SERVER, $_ENV);
-$_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . 'index.php';
-$_SERVER['SCRIPT_NAME'] = DIRECTORY_SEPARATOR . 'index.php';
-$_SERVER['PHP_SELF'] = DIRECTORY_SEPARATOR . 'index.php';
+$_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'] . $grav_basedir .DIRECTORY_SEPARATOR . 'index.php';
+$_SERVER['SCRIPT_NAME'] = $grav_basedir . DIRECTORY_SEPARATOR . 'index.php';
+$_SERVER['PHP_SELF'] = $grav_basedir . DIRECTORY_SEPARATOR . 'index.php';
 
 error_log(sprintf('%s:%d [%d]: %s', $_SERVER['REMOTE_ADDR'], $_SERVER['REMOTE_PORT'], http_response_code(), $_SERVER['REQUEST_URI']), 4);
 
-require 'index.php';
+require $grav_index;
diff --git a/system/src/Grav/Common/Plugin.php b/system/src/Grav/Common/Plugin.php
index d85fcb4cf..8729a519f 100644
--- a/system/src/Grav/Common/Plugin.php
+++ b/system/src/Grav/Common/Plugin.php
@@ -151,15 +151,32 @@ class Plugin implements EventSubscriberInterface, \ArrayAccess
             if (\is_string($params)) {
                 $dispatcher->addListener($eventName, [$this, $params]);
             } elseif (\is_string($params[0])) {
-                $dispatcher->addListener($eventName, [$this, $params[0]], $params[1] ?? 0);
+                $dispatcher->addListener($eventName, [$this, $params[0]], $this->getPriority($params, $eventName));
             } else {
                 foreach ($params as $listener) {
-                    $dispatcher->addListener($eventName, [$this, $listener[0]], $listener[1] ?? 0);
+                    $dispatcher->addListener($eventName, [$this, $listener[0]], $this->getPriority($listener, $eventName));
                 }
             }
         }
     }
 
+    /**
+     * @param array  $params
+     * @param string $eventName
+     */
+    private function getPriority($params, $eventName)
+    {
+        $grav = Grav::instance();
+        $override = implode('.', ["priorities", $this->name, $eventName, $params[0]]);
+        if ($grav['config']->get($override) !== null)
+        {
+            return $grav['config']->get($override);
+        } elseif (isset($params[1])) {
+            return $params[1];
+        }
+        return 0;
+    }
+
     /**
      * @param array $events
      */