CVE-2025-13533CWE-79cross-site-scripting

CVE-2025-13533

Medium · published September 18, 2026

CVSS v3.1
4.4
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00195 · 8.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-18T13:16Z
References (5)
https://gist.github.com/e578d548291225c116a5827ad205a9e9 · [email protected]https://plugins.trac.wordpress.org/browser/css-javascript-toolbox/tags/12.0.6/controllers/block-ajax.php#L184 · [email protected]https://plugins.trac.wordpress.org/browser/css-javascript-toolbox/trunk/controllers/block-ajax.php#L184 · [email protected]https://plugins.trac.wordpress.org/changeset?reponame=&old=3667323%40css-javascript-toolbox&new=3667323%40css-javascript-toolbox · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/98ef6eeb-9fd5-4ecc-a75a-e17884b9d41a?source=cve · [email protected]
EPSS history
Timeline
  • 19 SEP 03:47Z
    EPSS moved — → 0%
    epss
  • 18 SEP 08:28Z
    CSS & JavaScript Toolbox <= 12.0.6 - Authenticated (Administrator+) Stored Cross-Site Scripting via Assignment Engine Fields
    cvelistv5