The WebinarPress WordPress plugin suffers from a missing authorization check on the 'sync-import-imgs' function combined with missing file type validation, enabling authenticated attackers with low privileges (subscriber-level and above) to create arbitrary files. This can be leveraged to achieve remote code execution. The vulnerability affects all versions up to 1.33.24. The CVSS 3.1 base score is 8.8, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.

An attacker with subscriber-level access or higher can exploit this vulnerability to create arbitrary files on the server, potentially leading to remote code execution. This compromises the confidentiality, integrity, and availability of the affected WordPress site. The vulnerability poses a high risk to affected installations.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict subscriber-level access and above to trusted users only. Monitor for plugin updates from the vendor and apply them promptly once released.