Copyscape Premium
Copyscape Premium has 2 disclosed vulnerabilities in the WordSec catalog, reported between 2024 and 2026; all 2 are fixed as of September 2026. Their average CVSS score is 5.2, and the most serious one scores 6.1 out of 10.
The most common weakness is Cross-Site Request Forgery (CSRF), behind 2 of the records (100%).
Every one of the 2 issues recorded for Copyscape Premium has a vendor fix available, so running the current release closes all known holes.
2 independent researchers contributed these findings, one record each. Copyscape Premium is installed on roughly 800 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 6.9.7.
CVE-2024-47644Copyscape Premium <= 1.3.8 - Cross-Site Request Forgery
Read the full analysisVulnerability Records

Copyscape Premium
Author
Copyscape
The Copyscape Premium plugin lets you check if a WordPress post is original before it’s published, by using the Copyscape Premium API to check for duplicate content on the web. The plugin will add a ‘Copyscape Check’ button to your WordPress interface, allowing you to check your posts whenever you wish. You may also set the plugin to automatically check your posts when you click ‘Publish’ and/or ‘Update’. When duplicate content is found, a report of matching pages is shown. You may also see a detailed comparison that highlights your content on the found page. If you do not already have a Copyscape Premium account, please sign up, purchase some credits, and enable your API access. You may then begin using the plugin.
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C