CVE-2026-57655 in Child Theme Wizard
Summary
by MITRE • 06/26/2026
Unauthenticated Cross Site Request Forgery (CSRF) in Child Theme Wizard <= 1.4 versions.
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Analysis
by VulDB Data Team • 06/26/2026
Cross site request forgery vulnerabilities represent one of the most persistent and dangerous threats in web application security landscapes, particularly when they affect plugin components that handle user data or system configurations. The Child Theme Wizard plugin version 1.4 and earlier contains a critical unauthenticated csrf vulnerability that allows attackers to perform unauthorized actions on behalf of users without their knowledge or consent. This flaw exists because the plugin fails to implement proper request validation mechanisms for sensitive operations such as theme activation, configuration changes, or data modifications. The vulnerability stems from the absence of anti-csrf tokens in critical endpoints, combined with the lack of authentication checks for administrative functions that should only be accessible to authorized users.
The technical implementation of this csrf flaw occurs when legitimate users visit malicious websites or click on compromised links that trigger requests to the vulnerable plugin's endpoints. Without proper token validation or user authentication verification, these forged requests are processed as if they originated from authenticated administrators. The attack vector typically involves crafting malicious html forms or javascript code that automatically submits requests to the target site's child theme wizard functionality, leveraging the victim's existing browser session and cookies. This creates a dangerous scenario where any user with access to the vulnerable plugin can be exploited to perform administrative actions such as activating themes, modifying settings, or potentially gaining further system access.
The operational impact of this vulnerability extends beyond simple unauthorized theme activation as it represents an entry point for more sophisticated attacks within WordPress environments. Attackers could leverage this csrf flaw to establish persistent backdoors through theme modifications, inject malicious code into the child theme templates, or manipulate plugin configurations to create conditions for privilege escalation attacks. The unauthenticated nature of this vulnerability means that attackers do not need valid user credentials to exploit it, making it particularly dangerous in environments where multiple users interact with the site. This flaw also violates fundamental security principles outlined in cwe-352, which specifically addresses cross site request forgery vulnerabilities and emphasizes the importance of implementing proper authentication and validation mechanisms for all administrative functions.
Mitigation strategies for this vulnerability require immediate attention through plugin updates to versions that properly implement csrf protection mechanisms. The recommended approach involves implementing anti-csrf tokens that are generated per user session and validated on each request to ensure legitimate user intent. Additionally, all administrative endpoints should enforce proper authentication checks before processing any sensitive operations. Organizations should also consider implementing additional security measures such as content security policies, request origin validation, and monitoring for unauthorized plugin modifications. The remediation process must include thorough testing of the updated plugin functionality to ensure that legitimate administrative operations continue to work correctly while preventing csrf exploitation attempts. This vulnerability demonstrates the critical importance of following secure coding practices and adhering to established security frameworks that address common web application flaws as outlined in the mitre attack framework for identifying and mitigating such threats across enterprise environments.
The presence of this vulnerability in Child Theme Wizard highlights the broader challenge of securing wordpress plugin ecosystems where third party components may contain security flaws that affect entire sites. Organizations should implement comprehensive plugin management policies including regular security assessments, automated scanning for known vulnerabilities, and maintaining updated security baselines. This particular flaw also underscores the need for proper input validation and output encoding practices that prevent attackers from crafting malicious requests that can bypass authentication mechanisms through csrf attacks. The vulnerability serves as a reminder of the critical importance of validating all user inputs and ensuring that administrative functions require proper authorization before execution, principles that are fundamental to maintaining secure web application architectures.