davidanderson Redux Framework Plugin up to 4.5.13.1 on WordPress Slider Field user_meta_save cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in davidanderson Redux Framework Plugin up to 4.5.13.1. This affects the function user_meta_save of the component Slider Field. Such manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-5399. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in davidanderson Redux Framework Plugin up to 4.5.13.1 and classified as problematic. Affected by this issue is the function user_meta_save of the component Slider Field. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-5399 since 04/02/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• davidanderson

Name

• Redux Framework Plugin

Version

• 4.5.13.0
• 4.5.13.1

CPE 2.3info

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CPE 2.2info

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