CVE-2025-12813: CWE-94 Improper Control of Generation of Code ('Code Injection') in strix-bubol5 Holiday class post calendar
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.
AI Analysis
Technical Summary
CVE-2025-12813 is a critical remote code execution vulnerability in the Holiday class post calendar WordPress plugin by strix-bubol5. It affects all versions up to 7.1 due to a lack of sanitization of user-supplied input in the 'contents' parameter used during cache file creation. This improper input handling enables unauthenticated attackers to execute arbitrary code on the server, compromising confidentiality, integrity, and availability. The vulnerability is categorized as CWE-94 (Code Injection). No patch or vendor advisory is currently available, and the plugin is not a cloud service.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary code on the affected server, leading to full compromise of the system's confidentiality, integrity, and availability. This can result in unauthorized access, data theft, service disruption, or further attacks originating from the compromised server.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, it is recommended to disable or remove the vulnerable plugin to prevent exploitation. Monitor official sources for updates and apply patches promptly once available.
CVE-2025-12813: CWE-94 Improper Control of Generation of Code ('Code Injection') in strix-bubol5 Holiday class post calendar
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-12813 is a critical remote code execution vulnerability in the Holiday class post calendar WordPress plugin by strix-bubol5. It affects all versions up to 7.1 due to a lack of sanitization of user-supplied input in the 'contents' parameter used during cache file creation. This improper input handling enables unauthenticated attackers to execute arbitrary code on the server, compromising confidentiality, integrity, and availability. The vulnerability is categorized as CWE-94 (Code Injection). No patch or vendor advisory is currently available, and the plugin is not a cloud service.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary code on the affected server, leading to full compromise of the system's confidentiality, integrity, and availability. This can result in unauthorized access, data theft, service disruption, or further attacks originating from the compromised server.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, it is recommended to disable or remove the vulnerable plugin to prevent exploitation. Monitor official sources for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-11-06T16:32:17.929Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6912b13414bc3e00ba783de2
Added to database: 11/11/2025, 3:44:52 AM
Last enriched: 4/9/2026, 4:20:49 PM
Last updated: 5/10/2026, 2:40:29 PM
Views: 199
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