Plex Media Server (PMS) versions 1.41.7.x through 1.42.0.x are affected by an unspecified security vulnerability reported via Plex’s bug bounty program. While technical details have not been publicly disclosed, the issue was acknowledged by the vendor and resolved in version 1.42.1. The vulnerability may pose a risk to system integrity, confidentiality, or availability, prompting a strong recommendation for all users to upgrade immediately.