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Critical Vulnerabilities Patched in XCloner Backup and Restore Plugin

On August 14, our Threat Intelligence team discovered several vulnerabilities present in XCloner Backup and Restore, a WordPress plugin installed on over 30,000 sites. This flaw gave authenticated attackers, with subscriber-level or above capabilities, the ability to modify arbitrary files, including PHP files. Doing so would allow an attacker to achieve remote code execution on a vulnerable site’s server. Alternatively, an attacker could create an exploit chain to obtain a database dump due to the same unprotected AJAX endpoint, amongst other things. The plugin also contained several endpoints that were vulnerable to cross-site request forgery (CSRF).

We initially

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