CVE-2024-31424 in Login with Phone Number Plugin
Summary
by MITRE • 04/15/2024
Cross-Site Request Forgery (CSRF) vulnerability in Hamid Alinia Login with phone number login-with-phone-number.This issue affects Login with phone number: from n/a through <= 1.6.93.
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Analysis
by VulDB Data Team • 04/02/2026
The Cross-Site Request Forgery vulnerability identified as CVE-2024-31424 resides within the Login with phone number WordPress plugin developed by Hamid Alinia. This vulnerability specifically impacts versions ranging from the initial release through version 1.6.93, creating a significant security risk for WordPress installations that utilize this authentication module. The flaw represents a critical weakness in the plugin's request validation mechanisms, allowing malicious actors to exploit the authentication flow through crafted cross-site requests that can manipulate user sessions and authentication states without their knowledge or consent. The vulnerability stems from the absence of proper anti-CSRF token validation within the plugin's phone number authentication endpoints, which are commonly used for user registration, login, and account management functions.
The technical implementation of this CSRF vulnerability occurs when the plugin fails to validate the presence of a legitimate anti-CSRF token in requests submitted to its authentication endpoints. This absence creates an exploitable condition where an attacker can construct malicious web pages or scripts that automatically submit requests to the vulnerable plugin's endpoints, effectively performing actions on behalf of authenticated users. The flaw operates by leveraging the browser's automatic handling of cookies and session data, which means that when a user visits a malicious site while logged into their WordPress administration panel, the attacker's crafted request can execute authenticated actions such as changing user passwords, modifying account settings, or performing unauthorized authentication operations. This vulnerability directly maps to CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in software applications, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1566.002 for spearphishing links, as the attack vector typically involves user interaction with malicious content.
The operational impact of this vulnerability extends beyond simple authentication bypasses, as it can lead to complete account compromise and potential privilege escalation within WordPress environments. An attacker who successfully exploits this CSRF vulnerability can gain unauthorized access to user accounts, potentially leading to data breaches, content manipulation, and unauthorized administrative actions. The vulnerability affects the core authentication flow of the plugin, meaning that any user who interacts with the affected WordPress site could become a victim of this attack. Given that phone number authentication is often used for critical account functions and may be integrated with other security systems, the consequences of exploitation could be severe, potentially allowing attackers to escalate privileges, access sensitive data, or disrupt service availability. The impact is particularly concerning in environments where the plugin is widely used and where users may have elevated privileges within the WordPress installation.
Mitigation strategies for this CSRF vulnerability require immediate action from system administrators and developers to address the root cause through proper token implementation and validation. The most effective approach involves implementing robust anti-CSRF token generation and validation mechanisms within the plugin's authentication endpoints, ensuring that each request contains a unique, unpredictable token that is verified against the user's current session. System administrators should immediately update to the latest version of the Login with phone number plugin where the vulnerability has been patched, as the vendor has likely implemented proper CSRF protection measures. Additionally, implementing Content Security Policy headers and using SameSite cookie attributes can provide additional layers of defense against this class of attack. Organizations should also conduct thorough security assessments of their WordPress installations to identify other potential CSRF vulnerabilities within custom plugins or themes, as this attack vector remains prevalent in web applications due to the complexity of proper session management and request validation across different frameworks and platforms. The implementation of web application firewalls and security monitoring systems can also help detect and prevent exploitation attempts of this vulnerability.