Security Advisory
CVE-2025-12813
9.8
CRITICAL
Vulnerability Description
The Holiday class post calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 7.1 via the 'contents' parameter. This is due to a lack of sanitization of user-supplied data when creating a cache file. This makes it possible for unauthenticated attackers to execute code on the server.
Published Date
November 11, 2025
Official Source
NIST NVD Advisory