WP Vulnerability WatchVulnerability data as of September 7, 2026

Known vulnerabilities in Custom CSS and JavaScript

Easily add custom CSS and JavaScript code to your WordPress site, with draft previewing, revisions, and minification!

1Reported vulnerabilities
5.3Highest CVSS score
2.0.16Latest version
10,000+Active installs

What to do now

Update Custom CSS and JavaScript to 2.0.16 or later. Some of these have no published fix. Update to the latest version and check the vendor advisory.

Plugin last updated: August 12, 2024 / Tested up to WordPress: 6.6.7 / View on wordpress.org

This plugin has not been updated in over two years. New vulnerabilities may never be fixed. Consider an alternative.

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVESeverityExploit probability
next 30 days		 Affected versionsFixed inPublished
CVE-2026-66683 Medium 5.3 0.2% 2.0.16 and earlier — August 6, 2026

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.