CVE-2026-6415— Advanced Custom Fields: Font Awesome Field <= 5.0.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via JSON Field
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| justinkruit | Advanced Custom Fields: Font Awesome Field | ≤ 5.0.2 | affected |
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I. Basic Information for CVE-2026-6415
Vulnerability Information
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Vulnerability Title
Advanced Custom Fields: Font Awesome Field <= 5.0.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via JSON Field
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Advanced Custom Fields: Font Awesome plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.0.2. This is due to insufficient input validation of JSON field values and unsafe client-side HTML construction in the update_preview() JavaScript function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Advanced Custom Fields: Font Awesome 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 Advanced Custom Fields: Font Awesome 5.0.2及之前版本存在跨站脚本漏洞，该漏洞源于JSON字段值输入验证不足以及update_preview() JavaScript函数中不安
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 |
|---|---|---|---|---|
| justinkruit | Advanced Custom Fields: Font Awesome Field | 0 ~ 5.0.2 | - |
II. Public POCs for CVE-2026-6415
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-79
- CVE-2026-6841
Reflected XSS in Request Tracker - CVE-2026-1543
Avada (Fusion) Builder <= 3.15.2 - Authenticated (Subscriber - CVE-2026-4811
WPB Floating Menu or Categories – Sticky Floating Side Menu - CVE-2026-39960
MantisBT is Vulnerable to Stored XSS through Custom Field Te - CVE-2026-9144
Taiko AG1000-01A Rev 7.3/8 Stored XSS via Web Configuration
V. Comments for CVE-2026-6415
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