Upgrade to 3.1.3

kirby/src/Session/FileSessionStore.php

@@ -352,7 +352,7 @@ class FileSessionStore extends SessionStore
         foreach ($iterator as $file) {
             // make sure that the file is a session file
             // prevents deleting files like .gitignore or other unrelated files
-            if (preg_match('/[0-9]+\.[a-z0-9]+\.sess/', $file->getFilename()) !== 1) {
+            if (preg_match('/^[0-9]+\.[a-z0-9]+\.sess$/', $file->getFilename()) !== 1) {
                 continue;
             }
 
@@ -364,9 +364,6 @@ class FileSessionStore extends SessionStore
             if ($expiryTime < $currentTime) {
                 // the session has expired, delete it
                 $this->destroy($expiryTime, $id);
-            } else {
-                // the following files are all going to be still valid
-                break;
             }
         }
     }