CVE-2025-12813

CRITICAL

Holiday class post calendar plugin - RCE

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 9.8
EPSS 0.0075
EPSS Percentile 49.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-94
Status published
Products (1)
strix-bubol5/Holiday class post calendar < 7.1
Published Nov 11, 2025
Tracked Since Feb 18, 2026