CVE-2024-29935 in Sina Extension for Elementor Plugin
Summary
by MITRE • 03/27/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in SinaExtra Sina Extension for Elementor allows Stored XSS.This issue affects Sina Extension for Elementor: from n/a through 3.5.0.
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Analysis
by VulDB Data Team • 04/12/2025
The vulnerability identified as CVE-2024-29935 represents a critical cross-site scripting flaw within the SinaExtra Sina Extension for Elementor plugin, specifically classified as a stored XSS vulnerability under the CWE-79 category. This weakness occurs when the plugin fails to properly sanitize user input during the web page generation process, creating an avenue for malicious actors to inject persistent malicious scripts into web pages viewed by other users. The vulnerability impacts all versions of the Sina Extension for Elementor up to and including version 3.5.0, indicating a widespread exposure across multiple releases of the plugin.
The technical exploitation of this vulnerability stems from the plugin's inadequate input validation and output encoding mechanisms during the rendering of dynamic web content. When users interact with the Elementor editor and input data through the Sina extension features, the system does not sufficiently neutralize potentially malicious input before storing and subsequently rendering it on web pages. This allows attackers to store malicious scripts within the plugin's data handling mechanisms, which then execute whenever other users view the affected pages. The stored nature of this XSS vulnerability means that the malicious payload persists on the server and affects multiple users without requiring repeated exploitation attempts.
From an operational perspective, this vulnerability poses significant risks to websites utilizing the affected Elementor extension, as it can lead to unauthorized access to user sessions, data theft, defacement of web content, and potential lateral movement within compromised networks. The impact extends beyond simple script execution, as attackers could leverage this vulnerability to steal cookies, session tokens, or other sensitive information from authenticated users. The vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious content and T1059.001 for command and control through script injection, making it a multi-faceted threat vector that could be exploited for various malicious purposes.
Organizations should prioritize immediate remediation by updating to the latest version of the Sina Extension for Elementor plugin where the XSS vulnerability has been addressed. System administrators should also implement network monitoring to detect potential exploitation attempts and consider implementing content security policies to mitigate the impact of any successful attacks. The vulnerability demonstrates the critical importance of input validation and output encoding in web applications, particularly within content management systems where user-generated content processing is prevalent. Security teams should conduct comprehensive vulnerability assessments of their Elementor-based websites and ensure proper patch management protocols are in place to prevent similar issues from occurring in other plugins or components of their web infrastructure.