CVE-2025-13533
MediumCVSS 4.4Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
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.
Risk Assessment
An authenticated attacker with Administrator-level access can inject arbitrary web scripts that execute when a user accesses the CJT block edit screen. This may lead to session hijacking or content tampering.
Recommendation
Update the CSS & JavaScript Toolbox plugin to a version later than 12.0.6. Limit administrator accounts and audit unusual changes in CJT blocks.
Other vulnerabilities in CSS & JavaScript Toolbox
See all- CVE-2025-14814Medium
The CSS & JavaScript Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's cjtoolbox shortcode in all versions up to, and including, 12.0.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CVE-2025-11928Medium
The CSS & JavaScript Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 12.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS