# Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.26 - Authenticated (Contributor+) Sensitive Information Exposure via Event Organizer/Speaker Assignment and Speaker/Organizer Events Shortcodes

- **ID:** WPSEC-2026-1152
- **Plugin:** Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce (`wp-event-solution`), https://wordpress.org/plugins/wp-event-solution/
- **Affected versions:** all versions before 4.1.27
- **Fixed in:** 4.1.27 (Update to 4.1.27 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-200
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-16)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-event-solution
- **Fix released:** 2026-10-16
- **Published:** 2026-10-17
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1152/

## Description

The Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce plugin for WordPress is vulnerable to Sensitive Information Exposure via event organizer/speaker assignment and the etn_speaker_events and etn_organizer_events shortcodes in all versions up to, and including, 4.1.26. This is due to the plugin accepting any user ID as an event organizer or speaker, and rendering a speaker/organizer profile for any user ID given in the shortcode 'id' attribute, without checking that the user is a speaker or organizer. This makes it possible for authenticated attackers, with Contributor-level access and above, to show the email address and phone number of arbitrary users, including administrators.

## References

- https://wpsec.com/vuln/WPSEC-2026-1152/
- https://plugins.svn.wordpress.org/wp-event-solution/tags/4.1.27/
- https://wordpress.org/plugins/wp-event-solution/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1152/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.