{
 "id": "WPSEC-2026-0521",
 "url": "https://wpsec.com/vuln/WPSEC-2026-0521/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-0521/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-0521/index.md",
 "title": "Event Tickets and Registration <= 5.30.0.1 - Authenticated (Subscriber+) Missing Authorization to Attendee QR Check-In Status Modification",
 "description": "The Event Tickets and Registration plugin for WordPress is vulnerable to unauthorized modification of data in versions 5.7.0 to 5.30.0.1 due to a missing capability check in the QR check-in admin notice, which set the '_tribe_qr_status' meta on any post ID supplied in the 'qr_checked_in' query parameter. This makes it possible for authenticated attackers, with Subscriber-level access and above, to flag arbitrary attendees as already checked in by QR code by loading any admin page with a crafted parameter, causing QR code check-in to reject those attendees' tickets.",
 "plugin": {
  "slug": "event-tickets",
  "name": "Event Tickets and Registration",
  "full_name": "Event Tickets and Registration",
  "wordpress_org": "https://wordpress.org/plugins/event-tickets/",
  "advisories_url": "https://wpsec.com/vuln/plugin/event-tickets/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/event-tickets"
 },
 "type": "NO AUTHORISATION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 4.3,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": "5.7.0",
    "from_inclusive": true,
    "to": "5.30.0.2",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 5.7.0 before 5.30.0.2"
  ]
 },
 "introduced_in": "5.7.0",
 "fixed_in": "5.30.0.2",
 "remediation": "Update to 5.30.0.2 or later.",
 "fix_released": "2026-10-06T11:24:26+00:00",
 "published": "2026-10-07T11:46:41+00:00",
 "updated": "2026-10-06T14:18:50.787838+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-0521/",
  "https://plugins.svn.wordpress.org/event-tickets/tags/5.30.0.2/",
  "https://wordpress.org/plugins/event-tickets/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/event-tickets",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-10-07"
 }
}