WordPress Plugin WP Symposium is prone to multiple vulnerabilities that lets attackers upload arbitrary files. An attacker can exploit these vulnerabilities to upload arbitrary PHP code and run it in the context of the Web server process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible. WordPress Plugin WP Symposium version 11.11.26 is vulnerable; other versions may also be affected.
Update to plugin version 11.12.24 or latest