CVE-2026-13158
Unknown · Everest Toolkit (WordPress Plugin)
The Everest Toolkit WordPress plugin lacks proper file validation during demo-content import, enabling authenticated administrators to upload and execute malicious PHP files.
Executive summary
An authenticated remote code execution vulnerability in the Everest Toolkit WordPress plugin allows administrators to execute arbitrary code, with a known proof-of-concept available.
Vulnerability
The plugin fails to validate file types during the demo-content import process, as it explicitly disables standard WordPress safety checks. This allows an authenticated administrator to upload executable PHP scripts to the server.
Business impact
With a CVSS score of 7.2, this vulnerability poses a significant threat to the integrity and availability of the host server. Successful exploitation allows for complete remote code execution, which could result in the total compromise of the WordPress environment, unauthorized data access, and potential lateral movement within the network.
Remediation
Immediate Action: Update the Everest Toolkit plugin to version 1.2.4 or later immediately to resolve the file validation issue.
Proactive Monitoring: Review web server logs for suspicious file upload activity or requests to unexpected PHP files within the plugin directories.
Compensating Controls: Use a Web Application Firewall to restrict file uploads to authorized types and monitor administrative actions within the WordPress dashboard for suspicious activity.
Exploitation status
Public Exploit Available: Yes (public PoC exists)
Analyst recommendation
Given that a proof-of-concept exploit is publicly available, this vulnerability carries an elevated risk. All organizations using the Everest Toolkit plugin must move to version 1.2.4 or later as a matter of urgency to prevent potential remote code execution attacks against their web infrastructure.