{
 "id": "WPSEC-2026-2142",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2142/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2142/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2142/index.md",
 "title": "Event Tickets and Registration <= 5.30.2 - Authenticated (Contributor+) Missing Authorization to Attendee Check-In",
 "description": "The Event Tickets and Registration plugin for WordPress is vulnerable to unauthorized modification of data via the attendee check-in and undo check-in AJAX actions and the QR code check-in in all versions up to, and including, 5.30.2. This is due to these actions only checking the generic 'edit_posts' capability, without checking that the user can manage the attendees of the attendee's own event. This makes it possible for authenticated attackers with Contributor-level access and above to check in attendees of events they do not manage, or undo their check-in.",
 "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": null,
    "from_inclusive": true,
    "to": "5.30.3",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 5.30.3"
  ]
 },
 "introduced_in": null,
 "fixed_in": "5.30.3",
 "remediation": "Update to 5.30.3 or later.",
 "fix_released": "2026-10-29T19:43:04+00:00",
 "published": "2026-10-30T20:44:05+00:00",
 "updated": "2026-10-30T09:24:08.020346+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2142/",
  "https://plugins.svn.wordpress.org/event-tickets/tags/5.30.3/",
  "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": "2026-10-30"
 }
}