Content Injection Vulnerability in WordPress
As part of a vulnerability research project for our Sucuri Firewall (WAF), we have been auditing multiple open source projects looking for security issues. While working on WordPress, we discovered was a severe content injection (privilege escalation) vulnerability affecting the REST API. This vulnerability allows an unauthenticated user to modify the content of any post or page within a WordPress site.
We disclosed the vulnerability to the WordPress Security Team who handled it extremely well.
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