CVE-2024-4385 in Envo Extra Plugin
Summary
by MITRE • 05/16/2024
The Envo Extra plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters in versions up to, and including, 1.8.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 03/29/2025
The CVE-2024-4385 vulnerability affects the Envo Extra plugin for WordPress, specifically versions up to and including 1.8.16, presenting a critical stored cross-site scripting flaw that compromises web application security. This vulnerability resides in the plugin's insufficient input sanitization and output escaping mechanisms, creating an exploitable condition that allows malicious actors with contributor-level permissions or higher to inject arbitrary web scripts into WordPress pages. The flaw represents a significant security weakness in the plugin's data handling processes, where user input fails to undergo proper validation and sanitization before being stored in the database and subsequently rendered in web pages. The vulnerability's classification as stored XSS indicates that malicious scripts persist in the application's database and execute whenever legitimate users access the compromised pages, making it particularly dangerous as the attack can affect multiple users over time.
The technical implementation of this vulnerability stems from the plugin's failure to properly sanitize user-provided input across multiple parameters, combined with inadequate output escaping when rendering content. Attackers with contributor-level privileges can leverage this weakness to inject malicious scripts that will execute in the context of other users' browsers when they access pages containing the injected content. This attack vector operates through the manipulation of parameters within the plugin's interface, where the application fails to validate or sanitize input before storing it in the database. The stored nature of the vulnerability means that the malicious code persists even after the initial injection, making it difficult to detect and remediate. This weakness directly violates security best practices for input validation and output encoding, creating a persistent threat that can be exploited repeatedly without requiring additional authentication or privileges.
The operational impact of CVE-2024-4385 extends beyond immediate script execution capabilities, as it enables attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. When authenticated users with contributor-level permissions or higher access compromised pages, their browsers execute the injected scripts, potentially allowing attackers to steal cookies, modify content, or redirect users to phishing sites. The vulnerability's exploitation requires minimal privileges, making it particularly concerning for WordPress installations where multiple users with varying permission levels exist. This weakness can be leveraged to establish persistent access to affected sites, as the stored scripts continue to execute whenever users access the compromised pages, potentially allowing attackers to maintain long-term presence within the application environment.
Mitigation strategies for CVE-2024-4385 should prioritize immediate plugin updates to versions that address the stored XSS vulnerability, as this represents the most effective remediation approach. Organizations should implement strict input validation and output escaping mechanisms throughout their WordPress installations, ensuring that all user-provided content undergoes proper sanitization before being stored or displayed. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting script execution and limiting the potential impact of successful exploitation attempts. Regular security audits and monitoring of WordPress plugins should be conducted to identify and remediate similar vulnerabilities before they can be exploited. This vulnerability aligns with CWE-79, which describes cross-site scripting flaws, and represents a typical example of how insufficient input validation and output escaping creates exploitable conditions in web applications. The ATT&CK framework categorizes this vulnerability under T1059.007 for command and script injection, highlighting the persistent nature of stored XSS attacks and their potential for establishing long-term access to compromised systems.