CVE-2026-24966: CSRF in Copyscape Premium

A successful CSRF attack against Copyscape Premium could allow an attacker to manipulate user settings, potentially altering plagiarism detection configurations or even deleting user accounts. The attacker would need to craft a malicious request and entice a legitimate user to click a link or visit a webpage containing the crafted request. Given Copyscape Premium's role in content originality checks, unauthorized modifications could have significant implications for website owners and content creators relying on the plugin's functionality. While the direct impact might be limited to the plugin's features, a compromised Copyscape Premium installation could be a stepping stone for further attacks if other vulnerabilities exist within the WordPress environment.

1. Reserved2026-01-28
2. Published2026-02-03
3. Modified2026-04-28
4. EPSS updated2026-03-23

The primary mitigation for CVE-2026-24966 is to immediately upgrade Copyscape Premium to version 1.4.2 or later. If upgrading is not immediately feasible due to compatibility issues or testing requirements, consider implementing stricter Content Security Policy (CSP) headers to restrict the sources from which scripts can be executed. Additionally, employing a Web Application Firewall (WAF) with CSRF protection rules can help block malicious requests. Regularly review Copyscape Premium’s configuration and user permissions to minimize potential damage from a successful attack. After upgrading, verify the fix by attempting a CSRF attack using a known payload and confirming that the request is blocked or ignored.

Active installs

1KNiche

Plugin rating