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CVE-2026-5399— Redux Framework <= 4.5.13.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Slider Field Value

Quick assessment

Affected
davidanderson Redux Framework
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.

Redux.io Redux Framework是Redux.io组织的一个帮助开发者快速构建可定制设置面板的扩展框架。 Redux.io Redux Framework 4.5.13.1及之前版本存在跨站脚本漏洞，该漏洞源于user_meta_save()函数输入清理不足和Redux_Slider::render()方法输出转义不当，且clean_default()方法仅在值为空或越界时转换为数字类型，使恶意字符串可通过PHP松散类型比较验证，导致具有Subscriber级别及以上权限的已认证攻击者可通

CVSS 6.4 · Medium EPSS 0.33% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
davidanderson Redux Framework ≤ 4.5.13.1 affected
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I. Basic Information for CVE-2026-5399

Vulnerability Information
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Vulnerability Title
Redux Framework <= 4.5.13.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Slider Field Value
Source: CVE Program / CVE List V5
Vulnerability Description
The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Slider field in User Profile settings in versions up to and including 4.5.13.1. This is due to insufficient input sanitization in the user_meta_save() function (which only sanitizes array values, not scalar values) and improper output escaping in the Redux_Slider::render() method, which outputs slider values into unquoted HTML attributes. The vulnerability also exploits the fact that the clean_default() method only casts values to numeric types when they are empty or out of bounds, allowing malicious strings like '1 tabindex=0 autofocus onfocus=alert(1) x=' to pass validation through PHP's loose type comparison. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts into their user profile that will execute whenever an Administrator navigates to view the attacker's profile 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
Redux.io Redux Framework 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Redux.io Redux Framework是Redux.io组织的一个帮助开发者快速构建可定制设置面板的扩展框架。 Redux.io Redux Framework 4.5.13.1及之前版本存在跨站脚本漏洞，该漏洞源于user_meta_save()函数输入清理不足和Redux_Slider::render()方法输出转义不当，且clean_default()方法仅在值为空或越界时转换为数字类型，使恶意字符串可通过PHP松散类型比较验证，导致具有Subscriber级别及以上权限的已认证攻击者可通
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 Redux Framework 0 ~ 4.5.13.1 -

II. Public POCs for CVE-2026-5399

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III. Intelligence Information for CVE-2026-5399

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Patches & Fixes for CVE-2026-5399 (2)

Security Blog Posts for CVE-2026-5399 (1)

Other References for CVE-2026-5399 (1)

IV. Related Vulnerabilities

Same product: Redux Framework
Same vendor: davidanderson
Same weakness: CWE-79

V. Comments for CVE-2026-5399

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