CVE-2025-12813 Details
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.
A remote code execution vulnerability exists in the Holiday Class Post Calendar plugin for WordPress, affecting all versions up to and including 7.1. The vulnerability arises from inadequate sanitization of user-supplied data in the 'contents' parameter when generating cache files. This flaw allows unauthenticated attackers to execute arbitrary code on the server.
No patch is currently available. It is recommended to uninstall the affected plugin and consider a replacement.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 11, 2025CISA-ADP
Assessed Nov 14, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Holiday class post calendar | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 8, 2026 | CVE Modified | [email protected] |
| Nov 11, 2025 | New CVE Received | [email protected] |
Volerion