{
 "id": "WPSEC-2026-2526",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2526/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2526/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2526/index.md",
 "title": "Számlázz.hu integráció WooCommerce-hez <= 6.3 - Unauthenticated Stored Cross-Site Scripting via Invoice Preview",
 "description": "The Integration for Szamlazz.hu and WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the VAT number field of the block checkout in all versions up to, and including, 6.3. This is due to insufficient input sanitization and missing output escaping. The block checkout saves the submitted VAT number to the order without sanitizing it. Validation does not stop markup: it sends only the first 8 characters of a Hungarian number to the API, and it can reuse an earlier successful result stored in the session. The invoice preview template then echoes the buyer, VAT number, line item and note data from the generated invoice XML without escaping. This makes it possible for unauthenticated attackers placing an order to inject arbitrary web scripts that execute when a shop manager or administrator opens the invoice preview for that order.",
 "plugin": {
  "slug": "integration-for-szamlazzhu-woocommerce",
  "name": "Számlázz.hu integráció WooCommerce-hez",
  "full_name": "Integration for Szamlazz.hu and WooCommerce",
  "wordpress_org": "https://wordpress.org/plugins/integration-for-szamlazzhu-woocommerce/",
  "advisories_url": "https://wpsec.com/vuln/plugin/integration-for-szamlazzhu-woocommerce/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/integration-for-szamlazzhu-woocommerce"
 },
 "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": "5.8",
    "from_inclusive": true,
    "to": "6.3.1",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 5.8 before 6.3.1"
  ]
 },
 "introduced_in": "5.8",
 "fixed_in": "6.3.1",
 "remediation": "Update to 6.3.1 or later.",
 "fix_released": "2026-11-03T22:05:34+00:00",
 "published": "2026-11-04T22:49:09+00:00",
 "updated": "2026-11-04T13:58:41.036498+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2526/",
  "https://plugins.svn.wordpress.org/integration-for-szamlazzhu-woocommerce/tags/6.3.1/",
  "https://wordpress.org/plugins/integration-for-szamlazzhu-woocommerce/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/integration-for-szamlazzhu-woocommerce",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-11-04"
 }
}