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CVE-2026-8438— All-In-One Security (AIOS) <= 5.4.7 - Unauthenticated Stored Cross-Site Scripting via REST API Request Path

Quick assessment

Affected
davidanderson All-In-One Security (AIOS) – Security and Firewall
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin All-In-One Security (AIOS) – Security and Firewall 5.4.7及之前版本存在跨站脚本漏洞，该漏洞源于get_rest_route()函数输入清理不足和column_d

CVSS 7.2 · High EPSS 0.59% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
davidanderson All-In-One Security (AIOS) – Security and Firewall ≤ 5.4.7 affected
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I. Basic Information for CVE-2026-8438

Vulnerability Information
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Vulnerability Title
All-In-One Security (AIOS) <= 5.4.7 - Unauthenticated Stored Cross-Site Scripting via REST API Request Path
Source: CVE Program / CVE List V5
Vulnerability Description
The All-In-One Security (AIOS) – Security and Firewall plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.4.7. This is due to insufficient input sanitization in the get_rest_route() function and missing output escaping in the column_default() method of the debug log list table. When the 'Disable REST API for non-logged in users' feature (aiowps_disallow_unauthorized_rest_requests) is enabled alongside debug logging (aiowps_enable_debug), an unauthenticated attacker can embed arbitrary HTML or JavaScript in the REST request path. The path is retrieved via urldecode($_SERVER['REQUEST_URI']), which decodes URL-encoded payloads into literal HTML characters. This decoded, unsanitized value is concatenated directly into a debug log message and stored in the database. When an administrator navigates to the AIOS Dashboard Debug Logs page, the column_default() method returns the raw database value without escaping, and the parent list table echoes it directly, causing JavaScript execution in the administrator's browser session. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the debug log page, enabling nonce theft, privileged AJAX/REST actions, and potential full site compromise.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin All-In-One Security (AIOS) – Security and Firewall 品跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin All-In-One Security (AIOS) – Security and Firewall 5.4.7及之前版本存在跨站脚本漏洞，该漏洞源于get_rest_route()函数输入清理不足和column_d
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
davidanderson All-In-One Security (AIOS) – Security and Firewall 0 ~ 5.4.7 -

II. Public POCs for CVE-2026-8438

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III. Intelligence Information for CVE-2026-8438

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Patches & Fixes for CVE-2026-8438 (2)

Vendor Advisories for CVE-2026-8438 (1)

IV. Related Vulnerabilities

Same product: All-In-One Security (AIOS) – Security and Firewall
Same vendor: davidanderson
Same weakness: CWE-79

V. Comments for CVE-2026-8438

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