All-In-One Security (AIOS) – Security and Firewall

93 Quality Score

Active Installs

27/30

With 1 million active installs, AIOS is one of the most deployed free security plugins in the WordPress ecosystem, placing it firmly in the mainstream tier.

Update Freshness

25/25

A perfect 100 reflects the most recent update landing on June 5, 2026, well within the 30-day freshness window PluginCheck uses to flag abandoned plugins.

User Rating

14/15

A 94 out of 100 from 1,708 reviewers signals consistently positive feedback, though the smaller sample is a fraction of what Wordfence or Jetpack receive.

Support Health

12/15

Only 26 of 38 support threads are resolved (68.4%), the weakest metric in the profile, suggesting users occasionally hit unanswered edge cases, likely tied to the plugin's sheer number of settings.

WP Compatibility

15/15

Tested against WordPress 7.0 and requiring only PHP 5.6 and WordPress 5.0, AIOS runs on virtually any host still in service.

Scores higher than 99% of indexed plugins

About

Protect your website investment with All-In-One Security (AIOS) – a comprehensive and easy to use security plugin designed especially for WordPress.

Active Installs 1M+

Rating ★★★★½ 4.7/5

Last Updated 2026-09-17 10:51am GMT

Requires WordPress 5.0+

Tested Up To 7.1.1

Requires PHP 5.6+

Security History

27 known vulnerabilities, all patched

4 Critical 4 High 18 Medium 1 Low

Most recent: June 5, 2026

View details ▸

All-In-One Security (AIOS) <= 5.4.7 - Unauthenticated Stored Cross-Site Scripting via REST API Request Path High

June 5, 2026 Patched in ["5.4.8"] CVE-2026-8438

All In One WP Security <= 5.2.6 - Cross-Site Request Forgery to IP Blocking Medium

February 8, 2024 Patched in ["5.2.7"] CVE-2024-30468

All-In-One Security (AIOS) – Security and Firewall <= 5.2.5 - Reflected Cross-Site Scripting Medium

February 6, 2024 Patched in ["5.2.6"] CVE-2024-1037

All In One WP Security <= 5.2.4 - Protection Bypass of Renamed Login Page via URL Encoding Medium

October 25, 2023 Patched in ["5.2.5"] CVE-2023-52147

All In One WP Security 5.1.9 - Plaintext Storage of Credentials Medium

July 11, 2023 Patched in ["5.2.0"]

All-In-One Security (AIOS) <= 5.1.4 - Authenticated (Admin+) Stored Cross-Site Scripting Medium

March 20, 2023 Patched in ["5.1.5"] CVE-2023-0157

All-In-One Security (AIOS) <= 5.1.4 - Authenticated(Admin+) Directory Traversal Medium

February 14, 2023 Patched in ["5.1.5"] CVE-2023-0156

All-In-One Security <= 5.1.2 - Information Disclosure Medium

December 9, 2022 Patched in ["5.1.3"] CVE-2022-4346

All In One WP Security & Firewall <= 5.1.0 - Cross-Site Request Forgery High

November 22, 2022 Patched in ["5.1.1"] CVE-2022-44737

All-In-One Security (AIOS) – Security and Firewall <= 5.0.8 - IP Spoofing to Protection Mechanism Bypass Medium

November 21, 2022 Patched in ["5.0.8"] CVE-2022-4097

All In One WP Security & Firewall <= 5.1.0 - Cross-Site Request Forgery High

November 17, 2022 Patched in ["5.1.1"]

All In One WP Security & Firewall 5.0.0 - 5.0.7 - Protection Bypass via IP Spoofing Medium

September 30, 2022 Patched in ["5.0.8"]

All In One WP Security & Firewall <= 4.4.10 - Open Redirect and Reflected Cross-Site Scripting Medium

April 11, 2022 Patched in ["4.4.11"] CVE-2021-25102

All In One WP Security & Firewall <= 4.4.5 - Cross-Site Scripting Medium

December 24, 2020 Patched in ["4.4.6"] CVE-2020-29171

All In One WP Security & Firewall <= 4.4.3 - Reflected Cross-Site Scripting Medium

September 8, 2020 Patched in ["4.4.4"]

All In One WP Security & Firewall <= 4.0.8 - SQL Injection Critical

August 14, 2019 Patched in ["4.0.9"] CVE-2016-10887

All In One WP Security & Firewall <= 4.1.9 - Reflected Cross-Site Scripting Medium

November 11, 2016 Patched in ["4.2.0"] CVE-2016-10866

All In One WP Security & Firewall <= 4.1.2 - Captcha Bypass Medium

July 31, 2016 Patched in ["4.1.3"]

All In One WP Security & Firewall <= 4.0.6 - SQL Injection Critical

April 6, 2016 Patched in ["4.0.7"] CVE-2016-10888

All In One WP Security & Firewall <= 4.0.5 - Cross-Site Scripting Medium

February 23, 2016 Patched in ["4.0.6"] CVE-2016-10867

All In One WP Security & Firewall <= 4.0.4 - Cross-Site Scripting Medium

February 22, 2016 Patched in ["4.0.5"] CVE-2016-10868

All In One WP Security & Firewall <= 3.9.7 - Cross-Site Scripting Medium

August 15, 2015 Patched in ["3.9.8"] CVE-2015-9293

All In One WP Security & Firewall <= 3.9.4 - Reflected Cross-Site Scripting Medium

April 20, 2015 Patched in ["3.9.5"] CVE-2015-9294

All In One WP Security & Firewall <= 3.9.0 - SQL Injection Critical

April 6, 2015 Patched in ["3.9.1"] CVE-2015-9310

All In One WP Security & Firewall <= 3.8.9 - Cross-Site Request Forgery Low

March 6, 2015 Patched in ["3.9.0"] CVE-2015-0895

All In One WP Security & Firewall <= 3.8.7 - SQL Injection Critical

March 6, 2015 Patched in ["3.8.8"] CVE-2015-0894

All In One WP Security & Firewall <= 3.8.2 - Authenticated Access or Cross-Site Request Forgery leading to SQL Injection via orderby, order Parameters High

September 24, 2014 Patched in ["3.8.3"] CVE-2014-6242

What It Does

All-In-One Security (AIOS) bundles firewall rules, login hardening, malware scanning, two-factor authentication, and content protection into a single WordPress dashboard. It scores your site on a 0-100 'security strength' meter and lets you toggle layered defences, from blocking brute-force logins to disabling XML-RPC, without editing server files.

Who It's For

Best suited for small business owners, bloggers, and membership site operators who want a free, all-in-one defensive layer and are comfortable toggling settings themselves rather than hiring a security specialist. The breadth of features also covers healthcare, legal, and financial sites that need login lockdown and 2FA without paying for a premium tier.

Who Should Skip It

High-tra WooCommerce stores or enterprises running custom application servers should skip AIOS in favour of a WAF-backed solution like Cloudflare or Sucuri, since AIOS is application-layer only and its malware scanner is signature-based rather than a real-time endpoint monitor.

The Bottom Line

AIOS delivers an impressive breadth of free security features for the price and is actively maintained, earning a 91.23 overall score. The only meaningful gap is its 68% support resolution rate, so plan to lean on documentation and forums rather than expecting fast ticket responses.

Related Plugins

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Jetpack 93/100

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Pick Limit Login Attempts Reloaded if you only need brute-force login protection and want a minimal footprint.

Compare All-In-One Security (AIOS) – Security and Firewall

All-In-One Security (AIOS) – Security and Firewall vs Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) 99/100

All-In-One Security (AIOS) – Security and Firewall vs Wordfence Security – Firewall, Malware Scan, and Login Security 95/100

All-In-One Security (AIOS) – Security and Firewall vs Jetpack – WP Security, Backup, Speed, & Growth 92/100

All-In-One Security (AIOS) – Security and Firewall vs Limit Login Attempts Security – Login Security, 2FA, Firewall, Brute Force Prevention 90/100