CVE-2026-5399
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
The Redux Framework plugin for WordPress in versions up to and including 4.5.13.1 is vulnerable to stored cross-site scripting via the Slider field in User Profile settings. This is due to insufficient input sanitization in the user_meta_save() function and improper output escaping in the Redux_Slider::render() method. An authenticated attacker with Subscriber-level access or above can inject arbitrary scripts into their profile that execute when an Administrator views the attacker's profile page.
Risk Assessment
A low-privileged attacker can execute arbitrary JavaScript in the context of an administrator's session, potentially leading to account or full site compromise.
Recommendation
Update the Redux Framework plugin to a version later than 4.5.13.1.
Other vulnerabilities in Redux Framework
See all- CVE-2026-5410Medium
The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the spinner field in versions up to and including 4.5.13 due to insufficient input sanitization and output escaping. In the user_meta_save() function scalar values bypass the sanitization logic that only processes arrays, allowing the spinner field value to be stored in user meta without proper sanitization. Later, this value is rendered in an unquoted HTML attribute without escaping, enabling authenticated attackers with subscriber-level access and above to inject arbitrary web scripts.
- CVE-2026-5400Medium
The Redux Framework plugin for WordPress in versions up to and including 4.5.13 is vulnerable to Stored Cross-Site Scripting via the Media field filter values due to insufficient input sanitization of nested array values in the user_meta_save() function and unsafe output of filter CSS values in the render() function without proper escaping. Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CVE-2026-12525High
The Redux Framework WordPress plugin before version 4.5.13 does not restrict which user meta keys can be written when saving custom profile fields. This allows users with at least the Subscriber role to escalate their privileges to Administrator by submitting a crafted value while updating their own profile, on sites where the Redux Framework WordPress plugin before 4.5.13's user-profile (Users extension) feature is enabled.
Original NVD description (English source)
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.