CVE-2025-49029 in Custom Login and Signup Widget Plugin
Summary
by MITRE • 07/01/2025
Improper Control of Generation of Code ('Code Injection') vulnerability in bitto.Kazi Custom Login And Signup Widget allows Code Injection.This issue affects Custom Login And Signup Widget: from n/a through 1.0.
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Analysis
by VulDB Data Team • 07/03/2025
The vulnerability identified as CVE-2025-49029 represents a critical improper control of code generation flaw within the bitto.Kazi Custom Login And Signup Widget plugin. This vulnerability falls under the broader category of code injection attacks as classified by CWE-94, which specifically addresses situations where untrusted data is used to generate code without proper validation or sanitization. The affected plugin version range indicates that all iterations from the initial release through version 1.0 remain susceptible to this particular weakness, suggesting a fundamental flaw in the plugin's architecture that has not been addressed in its development lifecycle.
The technical implementation of this vulnerability stems from the plugin's failure to properly validate and sanitize user inputs that are subsequently used in code generation processes. When users interact with the custom login and signup forms, the plugin likely processes form data through server-side code execution mechanisms that directly incorporate user-supplied parameters into dynamic code generation routines. This creates an environment where malicious actors can inject arbitrary code that gets executed within the plugin's operational context, potentially leading to complete system compromise. The vulnerability's classification as a code injection flaw aligns with ATT&CK technique T1059.001 which covers command and scripting interpreter execution, and specifically targets the execution of malicious code through improperly controlled input handling.
The operational impact of this vulnerability extends beyond simple data theft or service disruption, as it provides attackers with the capability to execute arbitrary commands on the affected system. This could enable unauthorized access to user credentials, database manipulation, or even full system compromise if the plugin runs with elevated privileges. The vulnerability affects WordPress installations where the specific plugin is active, potentially exposing thousands of websites to remote code execution attacks. Attackers could leverage this vulnerability to establish persistent backdoors, deploy malware, or conduct further reconnaissance activities within the compromised network environment. The impact is particularly severe given that login and signup widgets are fundamental components of most web applications, making them prime targets for exploitation.
Mitigation strategies for CVE-2025-49029 should prioritize immediate plugin updates from the vendor, as this represents a critical security flaw requiring urgent attention. Organizations should implement network-level protections including firewall rules and intrusion detection systems to monitor for suspicious code execution patterns. Input validation and sanitization measures should be strengthened throughout the application stack, with particular attention to user-supplied data that might be processed through dynamic code generation routines. Security monitoring should include regular vulnerability scanning and penetration testing to identify similar weaknesses in other components. The implementation of web application firewalls and runtime application self-protection mechanisms can provide additional layers of defense against code injection attacks. Additionally, administrators should conduct thorough security audits of all plugins and themes to identify similar vulnerabilities that may have been overlooked in the development process, as this vulnerability pattern often indicates broader architectural issues within the software development lifecycle.