Redux Framework <= 4.5.13.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Slider Field Value
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| davidanderson | Redux Framework | up to 4.5.13.1 | — | No fix listed | CNA |
- Redux Framework Vendordavidanderson Affected up to 4.5.13.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5399
- 2026-10-03 Alias added: GHSA-hvw8-fmqf-2f96
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/31c554cf-eee9-45a8-8fb6-198978620204?source=cve
- https://plugins.trac.wordpress.org/browser/redux-framework/trunk/redux-core/inc/fields/slider/class-redux-slider.php#L311
- https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.10/redux-core/inc/fields/slider/class-redux-slider.php#L311
- https://plugins.trac.wordpress.org/browser/redux-framework/trunk/redux-core/inc/extensions/users/class-redux-extension-users.php#L1018
- https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.10/redux-core/inc/extensions/users/class-redux-extension-users.php#L1018
- https://github.com/reduxframework/redux-framework/pull/4112/changes
More davidanderson vulnerabilities
- TI-2026-09266 UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 - Unauthenticated Authentication Bypass via UpdraftCentral udrpc CVSS 3.1HIGH 8.1
- TI-2026-07417 All-In-One Security (AIOS) <= 5.4.7 - Unauthenticated Stored Cross-Site Scripting via REST API Request Path CVSS 3.1HIGH 7.2
- TI-2024-10156 UpdraftPlus: WP Backup & Migration Plugin 1.23.8 - 1.24.11 - Unauthenticated PHP Object Injection CVSS 3.1HIGH 8.8
- TI-2024-06331 Redux Framework 4.4.12 - 4.4.17 - Unauthenticated JSON File Upload to Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
- TI-2026-06366 WP-Optimize <= 4.5.2 - Authenticated (Author+) Arbitrary File Deletion via 'original-file' Post Meta CVSS 3.1HIGH 8.1
- TI-2025-43896 Privilege escalation in Redux Framework lets subscribers set roles CVSS 3.1MEDIUM 6.8
Sources
- CVE-2026-5399 · CVE Program
- CVE-2026-5399 · NVD
- FIRST EPSS
- GHSA-hvw8-fmqf-2f96 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences