GetSimple CMS: Authenticated Stored XSS in backup viewer (backup-edit.php) via output decoding of page meta fields and content

{
                    "vendor": "GetSimpleCMS-CE",
                    "product": "GetSimpleCMS-CE",
                    "versions": [
                        {
                            "version": "<= 3.3.22",
                            "status": "affected"
                        }
                    ]
                }