{
 "id": "WPSEC-2026-2509",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2509/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2509/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2509/index.md",
 "title": "ЮKassa для WooCommerce <= 2.17.3 - Unauthenticated Saved Payment Method Injection via Forged Payment Notification",
 "description": "The ЮKassa для WooCommerce plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity via the '?yookassa=callback' payment notification endpoint in all versions up to, and including, 2.17.3, due to the plugin trusting the payment object in the unverified notification body (metadata such as wp_user_id, the payment method and the payment status) and acting on it before it re-fetches the payment from the YooKassa API. This makes it possible for unauthenticated attackers to send forged notifications that save attacker-defined payment method tokens to arbitrary customer accounts.",
 "plugin": {
  "slug": "yookassa",
  "name": "ЮKassa для WooCommerce",
  "full_name": "ЮKassa для WooCommerce",
  "wordpress_org": "https://wordpress.org/plugins/yookassa/",
  "advisories_url": "https://wpsec.com/vuln/plugin/yookassa/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/yookassa"
 },
 "type": "BYPASS",
 "cwe": [
  "CWE-345"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 5.3,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "2.17.4",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 2.17.4"
  ]
 },
 "introduced_in": null,
 "fixed_in": "2.17.4",
 "remediation": "Update to 2.17.4 or later.",
 "fix_released": "2026-11-03T17:12:14+00:00",
 "published": "2026-11-04T17:48:32+00:00",
 "updated": "2026-11-04T13:59:07.532826+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2509/",
  "https://plugins.svn.wordpress.org/yookassa/tags/2.17.4/",
  "https://wordpress.org/plugins/yookassa/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/yookassa",
 "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": "2026-11-04"
 }
}