# Event Tickets and Registration <= 5.31.0 - Unauthenticated Missing Authorization to Attendee Check-in Status Disclosure via QR REST Endpoint

- **ID:** WPSEC-2026-3098
- **Plugin:** Event Tickets and Registration (`event-tickets`), https://wordpress.org/plugins/event-tickets/
- **Affected versions:** from 5.7.0 before 5.31.1
- **Fixed in:** 5.31.1 (Update to 5.31.1 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-862
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-11-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/event-tickets
- **Fix released:** 2026-11-12
- **Published:** 2026-11-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-3098/

## Description

The Event Tickets and Registration plugin for WordPress is vulnerable to unauthorized access of data via the QR REST endpoint (/wp-json/tribe/tickets/v1/qr/<id>) in versions 5.7.0 up to, and including, 5.31.0, due to a missing manage-access check in the endpoint's GET handler, which is registered with a permission callback that allows everyone. This makes it possible for unauthenticated attackers to find out whether any attendee, chosen by ID, has been checked in.

## References

- https://wpsec.com/vuln/WPSEC-2026-3098/
- https://plugins.svn.wordpress.org/event-tickets/tags/5.31.1/
- https://wordpress.org/plugins/event-tickets/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-3098/

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.