What’s Vulnerable › Vulnerabilities

CVE-2025-13533: CSS & JavaScript Toolbox <= 12.0.6 - Authenticated (Administrator+) Stored Cross-Site Scripting via Assignment Engine Fields

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-10-14
• Weakness: CWE-79

Description

The CSS & JavaScript Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 12.0.6 via the Assignment Engine fields. This is due to insufficient input sanitization and output escaping on assignment data fields including Expressions, URLs, and Advanced assignment data. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the CJT block edit screen in the admin dashboard.

Affected products

• wipeoutmedia CSS & JavaScript Toolbox: through 12.0.6

References

• https://gist.github.com/e578d548291225c116a5827ad205a9e9
• https://plugins.trac.wordpress.org/browser/css-javascript-toolbox/tags/12.0.6/controllers/block-ajax.php#L184
• https://plugins.trac.wordpress.org/browser/css-javascript-toolbox/trunk/controllers/block-ajax.php#L184
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3667323%40css-javascript-toolbox&new=3667323%40css-javascript-toolbox
• https://www.wordfence.com/threat-intel/vulnerabilities/id/98ef6eeb-9fd5-4ecc-a75a-e17884b9d41a?source=cve

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