CVE-2026-5410: Redux Framework <= 4.5.13 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Spinner Field Input
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 This is due to insufficient input sanitization and output escaping. In the usermetasave() 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, at line 56 of class-redux-spinner.php in the render() function, this value is rendered in an unquoted HTML attribute without escaping via '$datastring .= ' data-val=' . $this->value;'. 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Redux Frameworkto a version that resolves this vulnerability.Fixed in 4.5.13
Event History
Frequently Asked Questions
Which users can exploit this issue?
An attacker needs an authenticated WordPress account with Subscriber-level permissions or higher. No user interaction is required from the attacker once they can submit the crafted spinner-field value.
What conditions are required for the injected script to execute?
The attacker must store a malicious value through the Redux Framework spinner field. The script executes when a user accesses a page that renders the injected spinner-field value.
What is the underlying affected code path?
Scalar values handled by user_meta_save() bypass sanitization that applies only to arrays, allowing the spinner value to be stored in user metadata. The spinner render() function then places that value into an unquoted data-val HTML attribute without escaping.