{
 "id": "WPSEC-2026-1247",
 "url": "https://wpsec.com/vuln/WPSEC-2026-1247/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-1247/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-1247/index.md",
 "title": "Casso – Tự động xác nhận thanh toán chuyển khoản ngân hàng <= 4.1.1 - Missing Authorization to Unauthenticated Casso Account Disconnection",
 "description": "The Casso Flow plugin for WordPress is vulnerable to unauthorized modification of data via the 'oauth2_status' parameter in all versions up to, and including, 4.1.1, due to a missing capability check in the Casso_Admin_Page constructor. The constructor runs disconnectOAuth2() on any request to an admin endpoint (including admin-ajax.php), with no capability check and no nonce. This makes it possible for unauthenticated attackers to disconnect a Casso integration linked through OAuth: they can delete its webhooks, wipe the stored bank accounts and reset the plugin's payment settings.",
 "plugin": {
  "slug": "casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang",
  "name": "Casso – Tự động xác nhận thanh toán chuyển khoản ngân hàng",
  "full_name": "Casso Flow – Tự động xác nhận thanh toán chuyển khoản ngân hàng",
  "wordpress_org": "https://wordpress.org/plugins/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang/",
  "advisories_url": "https://wpsec.com/vuln/plugin/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang"
 },
 "type": "NO AUTHORISATION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 6.5,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "4.2.0",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 4.2.0"
  ]
 },
 "introduced_in": null,
 "fixed_in": "4.2.0",
 "remediation": "Update to 4.2.0 or later.",
 "fix_released": "2026-10-18T08:16:15+00:00",
 "published": "2026-10-19T08:48:41+00:00",
 "updated": "2026-10-18T10:55:49.135633+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-1247/",
  "https://plugins.svn.wordpress.org/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang/tags/4.2.0/",
  "https://wordpress.org/plugins/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/casso-tu-dong-xac-nhan-thanh-toan-chuyen-khoan-ngan-hang",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-10-19"
 }
}