CVE-2025-4334 Scanner

The Simple User Registration plugin is utilized widely by WordPress site administrators to streamline and manage user registration processes. Used in settings ranging from personal blogs to large-scale websites, it facilitates easy registration functionality. This plugin appeals especially to those seeking customizable user registration forms, adding user management flexibility. While offering ease of use and integration, it is instrumental for sites prioritizing user engagement and streamlined sign-up processes. However, like any plugin within its category, it can be susceptible to security vulnerabilities if not updated or configured correctly. Its adoption underscores a reliance on convenient user management solutions in the WordPress ecosystem.

Privilege Escalation vulnerabilities represent a significant security concern, allowing unauthorized users to gain elevated access levels. Such vulnerabilities typically occur due to inadequate restriction or validation mechanisms within software processes. They can lead to unauthorized access, data leakage, or even full administrative control, depending on the context. In the case of the Simple User Registration plugin, the unchecked user meta values during registration are central to the vulnerability. Exploiting this flaw could enable attackers to register as administrators without necessary authorization. Addressing privilege escalation vulnerabilities is crucial for maintaining robust security postures in web applications.

The vulnerability in the Simple User Registration plugin stems from improperly managed user meta values. This lack of restriction exists in user registration forms, particularly the 'role' parameter, which administrators typically control for security. Malicious actors can exploit this weak point by manipulating registration requests, inserting themselves as administrators. The vulnerability persists in plugin versions up to and including 6.3. Attackers can bypass standard user roles and escalate their privileges by crafting requests that inject admin-level access. The vulnerability highlights the critical need for securely managing form inputs and user role assignments.

When exploited, this vulnerability allows attackers to register with administrator privileges, potentially taking full control of an affected WordPress site. The consequences include unauthorized access to sensitive data, tampering with content, and executing site-wide changes. Attackers may also exploit admin access to deploy further malicious tools or backdoors. This unchecked access endangers the security integrity of the site, potentially disrupting services and damaging trust. Ultimately, exploitation can lead to significant reputational and operational harm for site owners and operators.

REFERENCES

• https://github.com/Nxploited/CVE-2025-4334