{
 "id": "WPSEC-2026-1736",
 "url": "https://wpsec.com/vuln/WPSEC-2026-1736/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-1736/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-1736/index.md",
 "title": "All-In-One Security (AIOS) – Security and Firewall <= 5.4.10 - Authenticated (Subscriber+) Two-Factor Authentication Bypass via Forged TFA Code Verification Request",
 "description": "The All-In-One Security (AIOS) – Security and Firewall plugin for WordPress is vulnerable to two-factor authentication bypass in all versions up to, and including, 5.4.10, due to the authorise_user_from_login() function trusting a 'creds_user_id' value taken straight from the login request ($_POST) and checking the submitted two-factor code against that user instead of the account being logged into. This makes it possible for authenticated attackers, with subscriber-level access and above, whose own account has two-factor authentication active, to have their own code accepted for another user's account. Exploitation also requires the attacker to know the password of the target account.",
 "plugin": {
  "slug": "all-in-one-wp-security-and-firewall",
  "name": "All-In-One Security (AIOS) – Security and Firewall",
  "full_name": "All-In-One Security (AIOS) – Security and Firewall",
  "wordpress_org": "https://wordpress.org/plugins/all-in-one-wp-security-and-firewall/",
  "advisories_url": "https://wpsec.com/vuln/plugin/all-in-one-wp-security-and-firewall/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/all-in-one-wp-security-and-firewall"
 },
 "type": "AUTHBYPASS",
 "cwe": [
  "CWE-287"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 6.8,
  "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "5.5.0",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 5.5.0"
  ]
 },
 "introduced_in": null,
 "fixed_in": "5.5.0",
 "remediation": "Update to 5.5.0 or later.",
 "fix_released": "2026-10-26T13:09:52+00:00",
 "published": "2026-10-27T13:53:32+00:00",
 "updated": "2026-10-27T13:38:23.453740+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-1736/",
  "https://plugins.svn.wordpress.org/all-in-one-wp-security-and-firewall/tags/5.5.0/",
  "https://wordpress.org/plugins/all-in-one-wp-security-and-firewall/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/all-in-one-wp-security-and-firewall",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-10-27"
 }
}