{
 "id": "WPSEC-2026-2619",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2619/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2619/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2619/index.md",
 "title": "Leaky Paywall <= 5.3.2 - Unauthenticated Payment Bypass via Forged PayPal IPN",
 "description": "The Leaky Paywall plugin for WordPress is vulnerable to a payment bypass via the PayPal Standard IPN listener in versions 5.0.8 up to, and including, 5.3.2. This is due to insufficient verification of data authenticity: when PayPal's verification endpoint did not answer VERIFIED, the plugin fell back to a self-validation that only checked request fields the sender controls (receiver email, payment status, invoice format, amount and the custom email). This makes it possible for unauthenticated attackers to forge PayPal payment notifications and create or activate paid subscriptions without paying.",
 "plugin": {
  "slug": "leaky-paywall",
  "name": "Leaky Paywall",
  "full_name": "Leaky Paywall",
  "wordpress_org": "https://wordpress.org/plugins/leaky-paywall/",
  "advisories_url": "https://wpsec.com/vuln/plugin/leaky-paywall/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/leaky-paywall"
 },
 "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": "5.0.8",
    "from_inclusive": true,
    "to": "5.3.3",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 5.0.8 before 5.3.3"
  ]
 },
 "introduced_in": "5.0.8",
 "fixed_in": "5.3.3",
 "remediation": "Update to 5.3.3 or later.",
 "fix_released": "2026-11-04T21:10:25+00:00",
 "published": "2026-11-05T21:42:42+00:00",
 "updated": "2026-11-05T10:27:29.629094+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2619/",
  "https://plugins.svn.wordpress.org/leaky-paywall/tags/5.3.3/",
  "https://wordpress.org/plugins/leaky-paywall/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/leaky-paywall",
 "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": "2026-11-05"
 }
}