CVE-2026-120533: Redux Framework <= 4.5.16 - Authenticated (Custom+) Stored Cross-Site Scripting via theme_opts Parameter via User Profile

Q: Which sites are actually exposed to exploitation?

A site is exposed only if its active host theme has registered a Redux CSS-emitting field, such as link_color, border, or typography, and configured that field with an output CSS selector. Fields of the spinner, slider, color, and date types have per-type validation that blocks the described entity-encoded payload.

Q: What access does an attacker need?

An attacker must be authenticated with at least subscriber-level access. No user interaction is required to inject the payload, but the stored script executes when someone accesses a page where the injected content is output.

Q: How can I determine whether my theme configuration is affected?

Review the active theme's Redux field registrations for CSS-emitting field types with output CSS selectors. In particular, identify fields other than spinner, slider, color, and date that allow profile-supplied theme_opts values to be emitted into CSS.

Published Nov 5, 2026

Updated

The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via themeopts Parameter via User Profile in all versions up to, and including, 4.5.16 due to insufficient input sanitization and output escaping. 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. Successful exploitation requires the host theme to have registered a Redux field of a CSS-emitting type (such as linkcolor, border, or typography) with an output CSS selector, as only the field types 'spinner', 'slider', 'color', and 'date' receive per-type value validation that would block the entity-encoded payload.

Event History

Nov 5, 2026

CVE Published

via MITRE·04:48 AM

Data Sourced

via MITRE·04:48 AM

DescriptionSeverityWeakness

Data Sourced

via NVD·05:18 AM

DescriptionSeverityWeakness

Frequently Asked Questions

Which sites are actually exposed to exploitation?

A site is exposed only if its active host theme has registered a Redux CSS-emitting field, such as link_color, border, or typography, and configured that field with an output CSS selector. Fields of the spinner, slider, color, and date types have per-type validation that blocks the described entity-encoded payload.

What access does an attacker need?

An attacker must be authenticated with at least subscriber-level access. No user interaction is required to inject the payload, but the stored script executes when someone accesses a page where the injected content is output.

How can I determine whether my theme configuration is affected?

Review the active theme's Redux field registrations for CSS-emitting field types with output CSS selectors. In particular, identify fields other than spinner, slider, color, and date that allow profile-supplied theme_opts values to be emitted into CSS.

CVE-2026-120533: Redux Framework <= 4.5.16 - Authenticated (Custom+) Stored Cross-Site Scripting via theme_opts Parameter via User Profile

Event History

Frequently Asked Questions

Which sites are actually exposed to exploitation?

What access does an attacker need?

How can I determine whether my theme configuration is affected?

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Frequently Asked Questions

Which sites are actually exposed to exploitation?

What access does an attacker need?

How can I determine whether my theme configuration is affected?