CVE-2025-5304 in PT Project Notebooks Plugin
Summary
by MITRE • 06/28/2025
The PT Project Notebooks plugin for WordPress is vulnerable to Privilege Escalation due to missing authorization in the wpnb_pto_new_users_add() function in versions 1.0.0 through 1.1.3. This makes it possible for unauthenticated attackers to elevate their privileges to that of an administrator.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/07/2025
The PT Project Notebooks plugin for WordPress presents a critical privilege escalation vulnerability through the wpnb_pto_new_users_add() function, affecting versions 1.0.0 through 1.1.3. This vulnerability stems from insufficient authorization checks within the plugin's codebase, creating an exploitable pathway for unauthenticated attackers to gain administrative privileges. The flaw represents a fundamental breakdown in the plugin's access control mechanisms, allowing malicious actors to bypass normal authentication procedures and assume elevated user roles. The vulnerability is particularly concerning as it operates entirely without requiring any prior authentication credentials, making it accessible to anyone who can interact with the affected WordPress installation. This type of vulnerability directly violates the principle of least privilege and demonstrates poor implementation of access control validation within the plugin's user management system.
The technical execution of this privilege escalation requires attackers to leverage the missing authorization check in the wpnb_pto_new_users_add() function, which likely processes user creation or modification requests without proper verification of the requester's credentials or role permissions. This function appears to handle user-related operations that should typically be restricted to authenticated administrators, yet it fails to validate whether the incoming request originates from a legitimate privileged user. The vulnerability creates a direct attack vector that allows unauthenticated users to perform administrative actions, effectively undermining the entire WordPress permission model. The flaw may involve improper handling of user session data, missing nonce validation, or insufficient capability checks that should normally prevent unauthorized access to administrative functions.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with complete administrative control over affected WordPress installations. Once successfully exploited, attackers can modify plugin settings, manipulate user accounts, access sensitive data, and potentially establish persistent backdoors within the system. This level of access enables comprehensive compromise of the affected websites, including potential data exfiltration, defacement, and the ability to deploy additional malware. The vulnerability affects not only individual user accounts but also the overall security posture of the entire WordPress installation, potentially exposing other plugins, themes, and system components to further exploitation. The widespread adoption of the PT Project Notebooks plugin increases the potential attack surface and makes this vulnerability particularly attractive to automated exploitation tools.
Mitigation strategies should focus on immediate plugin version updates to address the authorization flaw, though administrators should also implement additional security measures including proper network segmentation, monitoring for unusual administrative activities, and regular security audits of installed plugins. The vulnerability aligns with CWE-863, which addresses "Incorrect Authorization" issues in software systems, and represents a clear violation of the principle that access control decisions must be made based on proper authentication and authorization checks. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques, specifically T1068, which involves exploiting vulnerabilities to gain elevated privileges. Organizations should also consider implementing web application firewalls, restricting administrative access to specific IP addresses, and conducting thorough vulnerability assessments to identify similar authorization flaws in other plugins or custom code implementations.