CVE-2025-12813 – Holiday class post calendar

CVE ID : CVE-2025-12813

Published : Nov. 11, 2025, 4:15 a.m. | 1 hour, 15 minutes ago

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.

Severity: 9.8 | CRITICAL

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