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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/holiday-class-post-calendar/trunk/hol
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7f7968c4-589c-4949-9f6
FAQ
What is CVE-2025-12813?
CVE-2025-12813 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 sanitizatio...
How severe is CVE-2025-12813?
CVE-2025-12813 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-12813?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.