---
title: "5.0.0"
manual: "Fullcalendar"
version: "5.0"
permalink: "https://docs.typo3.org/permalink/mediaessenz/fullcalendar:changelog-5-0-0@5.0"
source: "ChangeLog/5-0-0.rst"
rendered: "2026-10-25T19:39:57+00:00"
---

# 5.0.0 {#changelog-5-0-0}

-   [Compatibility](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:compatibility@5.0)
-   [Frontend](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:frontend@5.0)
-   [Features](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:features@5.0)
-   [Security](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:security@5.0)
-   [Bugfixes](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:bugfixes@5.0)
-   [Upgrade](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:upgrade@5.0)

## Compatibility {#compatibility}

-   TYPO3 13.4 and 14.3 LTS
-   New Site Set `mediaessenz/fullcalendar` with settings definitions

## Frontend {#frontend}

-   The frontend is now a Vue 3 application written in TypeScript. The sources moved to
    `Resources/Private/TypeScript` and are built with Vite (see [Development](https://docs.typo3.org/permalink/mediaessenz/fullcalendar:development@5.0)).
-   FullCalendar 6 with the Bootstrap 5 theme, Bootstrap Icons for the filter button.
-   The built files moved: `Resources/Public/JavaScript/fullcalendar.js`,
    `Resources/Public/Css/fullcalendar.css` and `Resources/Public/Fonts/`.
    If you override the template `Calendar/App.html`, change the paths to these files.

## Features {#features}

-   Event sources: Google calendar feeds, iCal feeds and EXT:calendarize
-   Category filter with groups, colors per category and restriction to frontend user groups
-   Event modal with iCal download

## Security {#security}

-   The descriptions of events from Google calendar and iCal feeds are sanitized (DOMPurify) before they are shown in the
    event modal. Before, HTML and scripts of the feeds were rendered (stored XSS).
-   Links of events (details, booking, location, organizer and the link of the event itself) are only used with the
    schemes http, https, mailto and tel, no `javascript:` URLs. Links which open another window get
    `rel="noopener noreferrer"`.
-   The calendarize feed answers invalid parameters (start, end, timeZone) with the status 400 instead of an
    error. The requested time span is limited to two years.

## Bugfixes {#bugfixes}

-   The link of the location of calendarize events was only set, if the event had a link of the organizer.
-   The labels of the fields *Hide* and *Access* of the feed records (and the entries *Hide at login*, *Show at any login*
    and *Usergroups* of the access field) were not translated in TYPO3 13.4 and missing at all for some fields.
-   The frontend user group restriction of categories works for the special values *Hide at login* and
    *Show at any login* in the filter, too, like in the calendarize feed.
-   iCal download: line breaks (`<br>`) in the description are written as line breaks of the
    ICS file instead of the text "\\n".
-   Category filter: the list of the available categories of a calendar no longer contains the categories of
    previously rendered calendars (e.g. a second calendar on the same page).

## Upgrade {#upgrade}

The extension originates from *me_google_calendar*. The upgrade wizard
`ExtbasePluginListTypeToCTypeUpdate` ("Migrates fullcalendar plugins") converts the plugins of
earlier versions (`list_type` `fullcalendar_calendar`, `fullcalendar_calendarv4`,
`fullcalendar_calendarv5` and `fullcalendar_feed`) to the content elements (`CType`).
Run the upgrade wizards of the install tool after the update and check the settings of your calendars.