This vulnerability involves unauthenticated PHP object injection in Popup by Supsystic plugin versions up to 1.13.0. It arises from unsafe deserialization of untrusted data (CWE-502), enabling remote attackers to execute arbitrary code or cause denial of service. The CVSS 3.1 score of 9.8 reflects network attack vector, low attack complexity, no privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available, and no known exploits are reported in the wild.

Successful exploitation can lead to remote code execution, complete system compromise, and denial of service. Since the vulnerability is exploitable without authentication or user interaction, it poses a critical risk to affected systems running vulnerable versions of the plugin.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider disabling or removing the vulnerable plugin to mitigate risk. Monitor vendor channels for updates and apply patches promptly once available.