CVE-2026-120533: XSS (CVSS 6.4)

Description

The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via theme_opts 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 link_color, 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.

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CVSS v3.1 Score

6.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0029

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/reduxframework/redux-framework/pull/4124/ https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/classes/class-redux-helpers.php#L1110 https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/classes/class-redux-output.php#L162 https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/classes/class-redux-output.php#L324 https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/extensions/users/class-redux-extension-users.php#L1022 https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/fields/link_color/class-redux-link-color.php#L232 https://plugins.trac.wordpress.org/browser/redux-framework/tags/4.5.15/redux-core/inc/fields/link_color/class-redux-link-color.php#L309 https://plugins.trac.wordpress.org/changeset?reponame=&new=3779521%40redux-framework%2Ftags%2F4.5.17&old=3741037%40redux-framework%2Ftags%2F4.5.16 https://www.wordfence.com/threat-intel/vulnerabilities/id/b256c288-07ea-46a2-ae76-0f90b4a33b6e?source=cve

Frequently Asked Questions

What is CVE-2026-120533? +

The Redux Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via theme_opts 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 link_color, 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. It has a CVSS v3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-120533? +

CVE-2026-120533 has a CVSS v3.1 score of 6.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0029, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-120533? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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