CVE-2026-27090 in Kenta Companion Plugin
Summary
by MITRE • 02/19/2026
Cross-Site Request Forgery (CSRF) vulnerability in WP Moose Kenta Companion kenta-companion allows Cross Site Request Forgery.This issue affects Kenta Companion: from n/a through <= 1.3.3.
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Analysis
by VulDB Data Team • 02/19/2026
This cross-site request forgery vulnerability in the WP Moose Kenta Companion plugin represents a significant security risk for WordPress installations. The flaw exists within the kenta-companion plugin version 1.3.3 and earlier, making all affected systems susceptible to unauthorized actions being performed on behalf of authenticated users. The vulnerability stems from the plugin's failure to implement proper anti-CSRF measures in its administrative interfaces, allowing malicious actors to exploit the trust relationship between the user's browser and the vulnerable WordPress site. This type of weakness falls under the Common Weakness Enumeration category CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities in web applications. The ATT&CK framework categorizes this as a privilege escalation technique where adversaries leverage existing user sessions to perform unauthorized operations.
The technical implementation of this CSRF flaw occurs when legitimate administrative functions lack proper validation of the request origin or require authentication tokens that are not properly enforced. Attackers can craft malicious requests that, when executed by an authenticated administrator, perform unintended actions such as modifying plugin settings, creating new user accounts, or altering site configuration parameters. The vulnerability is particularly dangerous because it targets the administrative interface of the plugin, potentially allowing full control over the affected WordPress installation. The attack vector typically involves tricking an administrator into clicking a malicious link or visiting a compromised website that automatically submits requests to the vulnerable plugin's endpoints.
The operational impact of this vulnerability extends beyond simple data modification, as it can lead to complete compromise of the WordPress site and potentially the entire hosting environment. An attacker who successfully exploits this CSRF vulnerability can escalate privileges, install malicious plugins, modify core WordPress files, or even establish persistent backdoors. The attack requires minimal sophistication from the adversary, as it only requires the administrator to be logged into the vulnerable site when visiting malicious content. This makes the vulnerability particularly dangerous in environments where administrators frequently browse untrusted websites or where social engineering attacks are common. The vulnerability's impact is amplified when the administrator has elevated privileges, as they can perform operations that affect the entire site's functionality and security posture.
Mitigation strategies for this CSRF vulnerability involve implementing proper token-based validation mechanisms in all administrative endpoints of the plugin. The recommended approach includes generating unique, unpredictable tokens for each user session and validating these tokens on every state-changing request. Additionally, implementing the SameSite cookie attributes and ensuring proper CORS policies can provide additional layers of protection. Organizations should immediately update to the latest version of the Kenta Companion plugin where this vulnerability has been patched, as the vendor has likely addressed the issue through proper CSRF token implementation. Security monitoring should be enhanced to detect unusual administrative activities that might indicate exploitation attempts. System administrators should also consider implementing network-level protections such as web application firewalls that can detect and block suspicious cross-site requests, while maintaining regular security audits of all installed plugins to identify potential vulnerabilities. The vulnerability demonstrates the critical importance of implementing proper session management and request validation in all web applications, particularly those with administrative interfaces that can modify system behavior.