{
 "id": "WPSEC-2026-1763",
 "url": "https://wpsec.com/vuln/WPSEC-2026-1763/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-1763/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-1763/index.md",
 "title": "VikBooking Hotel Booking Engine & PMS <= 1.8.18 - Unauthenticated Stored Cross-Site Scripting via Terms of Service Custom Field",
 "description": "The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Terms of Service custom field saving task ('customf.savetosajax') in versions 1.5.11 up to, and including, 1.8.18. This is due to a missing capability and admin-context check on the task, which updates the name and pop-up link of any custom field and can be reached from the front end, protected only by a form token that the plugin prints on public pages. The custom field names and links are also not escaped on output on the booking confirmation and room details request-information pages. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute whenever a user accesses an affected page.",
 "plugin": {
  "slug": "vikbooking",
  "name": "VikBooking Hotel Booking Engine & PMS",
  "full_name": "VikBooking Hotel Booking Engine & PMS",
  "wordpress_org": "https://wordpress.org/plugins/vikbooking/",
  "advisories_url": "https://wpsec.com/vuln/plugin/vikbooking/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/vikbooking"
 },
 "type": "XSS",
 "cwe": [
  "CWE-79"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 7.2,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
  "severity": "High"
 },
 "affected": {
  "ranges": [
   {
    "from": "1.5.11",
    "from_inclusive": true,
    "to": "1.8.19",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 1.5.11 before 1.8.19"
  ]
 },
 "introduced_in": "1.5.11",
 "fixed_in": "1.8.19",
 "remediation": "Update to 1.8.19 or later.",
 "fix_released": "2026-10-26T14:28:34+00:00",
 "published": "2026-10-27T14:45:37+00:00",
 "updated": "2026-10-27T13:05:31.562368+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-1763/",
  "https://plugins.svn.wordpress.org/vikbooking/tags/1.8.19/",
  "https://wordpress.org/plugins/vikbooking/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/vikbooking",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "None seen",
  "as_of": "2026-10-27"
 }
}