CVE-2025-49235 in RTMKit Addons for Elementor Plugin
Summary
by MITRE • 06/06/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rometheme RTMKit Addons for Elementor allows Stored XSS. This issue affects RTMKit Addons for Elementor: from n/a through 1.6.0.
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Analysis
by VulDB Data Team • 06/06/2025
This vulnerability represents a critical cross-site scripting flaw in the Rometheme RTMKit Addons for Elementor plugin, specifically targeting the web page generation process where input validation and sanitization mechanisms fail to properly neutralize user-supplied data. The stored nature of this vulnerability means that malicious payloads can be permanently injected into the application's database or storage systems, allowing attackers to execute malicious scripts against unsuspecting users who view the affected pages. This particular flaw exists within the plugin's handling of user input during the dynamic generation of web content, creating a persistent security risk that can affect all versions from the initial release through version 1.6.0.
The technical implementation of this vulnerability stems from inadequate input sanitization within the plugin's content rendering pipeline, where user-provided data flows directly into HTML generation without proper escaping or validation. When users submit content through the Elementor interface that incorporates the RTMKit Addons functionality, the plugin fails to adequately sanitize this input before storing it in the WordPress database or rendering it in subsequent page views. This creates a classic stored XSS scenario where malicious JavaScript code can be embedded in the plugin's output and executed in the context of other users' browsers. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting issues, and demonstrates how improper neutralization of input during web page generation can lead to persistent security breaches.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious sites. Attackers can leverage this vulnerability to gain unauthorized access to user accounts, manipulate website content, or establish persistent backdoors within the compromised WordPress environment. The stored nature of the vulnerability means that once exploited, the malicious code remains active until manually removed from the database, potentially affecting all users who access the compromised pages. This makes the vulnerability particularly dangerous in multi-user environments where administrators and regular users may be exposed to the same malicious payloads, creating a vector for privilege escalation attacks that can compromise entire WordPress installations.
Organizations should immediately implement multiple layers of mitigation strategies to address this vulnerability, beginning with immediate patching of the RTMKit Addons plugin to the latest available version that contains the necessary security fixes. System administrators should also implement input validation and output encoding measures at the web application level, ensuring that all user-supplied data undergoes proper sanitization before being processed or stored. Network-based security controls such as web application firewalls should be configured to detect and block known XSS attack patterns, while regular security audits should be conducted to identify and remediate similar vulnerabilities within the WordPress ecosystem. Additionally, user education and awareness programs should emphasize the importance of monitoring plugin updates and maintaining secure development practices. The ATT&CK framework categorizes this vulnerability under T1566 for credential access and T1059 for command and scripting interpreter techniques, highlighting the potential for broader exploitation once initial access is achieved through this XSS vector.