This critical vulnerability allows unauthenticated attackers to achieve remote code execution on affected WordPress sites. Insufficient authorization checks on REST API endpoints expose a sync code and permit arbitrary file uploads via path traversal. No prior authenticated access to the target site is required to exploit this flaw.
Remediation
Update the Quick Playground plugin to a patched version immediately if one is released. If no patch is available, remove the plugin entirely from your WordPress installation. Implement web application firewall rules to block access to the plugin's REST API endpoints.
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