Remote Code Execution and Cross-Site Scripting Vulnerability in WordPress 5.1.1

Remote Code Execution and Cross-Site Scripting Vulnerability in WordPress 5.1.1

CVE-2019-9787 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access, which allows arbitrary changes to .php files. This is related to wp-admin/includes/ajax-actions.php and wp-includes/comment.php.

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