CVE-2025-39354: Themegoods Grand Conference

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Conference grandconference allows Object Injection.This issue affects Grand Conference: from n/a through <= 5.3.

Affected products

• Themegoods Grand Conference: up to and including 5.3

Published 2025-05-19. Last modified 2026-06-17.