CVE-2025-49029 is a critical security vulnerability classified under CWE-94, which pertains to Improper Control of Generation of Code, commonly known as a code injection vulnerability. This flaw exists in the bitto.kazi Custom Login And Signup Widget, a software component used to manage user authentication interfaces. The vulnerability allows an attacker with high privileges (PR:H) and no user interaction (UI:N) to execute arbitrary code remotely (AV:N), impacting confidentiality, integrity, and availability (C:H/I:H/A:H) of affected systems. The vulnerability is particularly severe due to its scope (S:C), meaning it can affect multiple components or users beyond the initially compromised system. The widget versions affected are unspecified but include all versions up to 1.0. The absence of available patches at the time of publication increases the risk for organizations using this widget. Although no known exploits are currently in the wild, the high CVSS score of 9.1 indicates a critical threat that could be exploited to gain full control over affected systems, potentially leading to data breaches, system compromise, or service disruption. The vulnerability arises from improper sanitization or validation of code inputs within the widget, enabling attackers to inject and execute malicious code within the context of the application or server environment.

For European organizations, the impact of this vulnerability could be substantial, especially for those relying on the bitto.kazi Custom Login And Signup Widget for user authentication on websites or internal portals. Successful exploitation could lead to unauthorized access to sensitive user data, including personal identifiable information (PII) protected under GDPR, resulting in regulatory penalties and reputational damage. The ability to execute arbitrary code remotely can also facilitate lateral movement within networks, enabling attackers to compromise additional systems or deploy ransomware. Critical infrastructure, financial institutions, healthcare providers, and e-commerce platforms in Europe could face operational disruptions and financial losses. Given the widget’s role in authentication, exploitation could undermine trust in digital services and lead to widespread service outages or data integrity issues. The lack of patches and the critical severity necessitate immediate attention to prevent potential exploitation.

Organizations should immediately conduct an inventory to identify any deployments of the bitto.kazi Custom Login And Signup Widget. Until a patch is released, it is advisable to disable or replace the widget with alternative, secure authentication solutions. Implement strict input validation and sanitization controls at the application level to mitigate code injection risks. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the widget. Limit the privileges of accounts that can interact with the widget to reduce the risk of privilege escalation. Monitor logs and network traffic for unusual activities indicative of exploitation attempts. Additionally, segment networks to contain potential breaches and apply the principle of least privilege across systems. Stay updated with vendor advisories for patches or mitigations and plan for immediate deployment once available. Conduct security awareness training for developers and administrators on secure coding practices related to code injection vulnerabilities.