CVE-2025-12813

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published11/11/2025

Last Modified4/8/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-94

References

https://plugins.trac.wordpress.org/browser/holiday-class-post-calendar/trunk/holiday_class_post_calendar.php#L1234(security@wordfence.com)

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3414925%40holiday-class-post-calendar&new=3414925%40holiday-class-post-calendar&sfp_email=&sfph_mail=(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/7f7968c4-589c-4949-9f69-4a0ba4db4ea9?source=cve(security@wordfence.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.