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CVE-2026-6415— Advanced Custom Fields: Font Awesome Field <= 5.0.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via JSON Field

Quick assessment

Affected
justinkruit Advanced Custom Fields: Font Awesome Field
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 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

CVSS 6.4 · Medium EPSS 0.27% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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 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

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III. Intelligence Information for CVE-2026-6415

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Patches & Fixes for CVE-2026-6415 (3)

Vendor Advisories for CVE-2026-6415 (1)

IV. Related Vulnerabilities

Same product: Advanced Custom Fields: Font Awesome Field
Same weakness: CWE-79

V. Comments for CVE-2026-6415

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