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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 Reserved 2025-11-06 | Published 2025-11-11 | Updated 2025-11-14 | Assigner Wordfence




CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-94 Improper Control of Generation of Code ('Code Injection')

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-11-10:Disclosed

Credits

Kenneth Dunn finder

References

www.wordfence.com/...-589c-4949-9f69-4a0ba4db4ea9?source=cve

plugins.trac.wordpress.org/...oliday_class_post_calendar.php

cve.org (CVE-2025-12813)

nvd.nist.gov (CVE-2025-12813)

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