All-In-One Security (AIOS) – Security and Firewall <= 5.4.10 - Authenticated (Subscriber+) Two-Factor Authentication Bypass via Forged TFA Code Verification Request
- ID
- WPSEC-2026-1736
- Plugin
- All-In-One Security (AIOS) – Security and Firewall (all-in-one-wp-security-and-firewall)
- Affected
- all versions before 5.5.0
- Remediation
- Update to 5.5.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness
- CWE-287
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-27
- Attack surface
- All-In-One Security (AIOS) – Security and Firewall on WPSec AttackSurface
- Fix released
- Published
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.
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/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS