theme
2 known security issues reported for the Grandconference WordPress theme. Most recent disclosed Feb 3, 2026.
Running Grandconference on your site? Check whether your installed version is affected.
Scan your site freeThe Grand Conference theme for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 5.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully...
The Grand Conference plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 5.2 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present v...
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