CVE-2024-3978 in Jitsi Shortcode Plugin
Summary
by MITRE • 06/14/2024
The WordPress Jitsi Shortcode WordPress plugin through 0.1 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks
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Analysis
by VulDB Data Team • 03/23/2025
The vulnerability identified as CVE-2024-3978 affects the WordPress Jitsi Shortcode plugin version 0.1 and earlier, presenting a critical security risk through stored cross-site scripting exploitation. This issue stems from inadequate input validation and output escaping mechanisms within the plugin's shortcode processing functionality. The vulnerability specifically targets the plugin's handling of shortcode attributes, where user-provided data is not properly sanitized before being rendered back into the webpage content. Attackers with contributor-level privileges or higher can leverage this weakness to inject malicious scripts that will execute in the context of other users who view pages containing the vulnerable shortcode.
The technical flaw manifests in the plugin's failure to implement proper sanitization controls for shortcode parameters. When users with sufficient privileges insert Jitsi shortcode attributes into posts or pages, the plugin processes these inputs without adequate validation or escaping measures. This creates a persistent XSS vector where malicious scripts can be stored within the WordPress database and subsequently executed whenever affected pages are accessed. The vulnerability directly aligns with CWE-79, which categorizes cross-site scripting flaws as weaknesses that allow attackers to inject client-side scripts into web applications. The stored nature of this vulnerability means that the malicious payloads persist in the database rather than requiring immediate interaction, making the attack more insidious and harder to detect.
The operational impact of CVE-2024-3978 extends beyond simple script execution, as it enables attackers to potentially escalate privileges, steal user sessions, or access sensitive data. Contributors and higher-level users can manipulate the shortcode attributes to include malicious JavaScript code that could redirect users to phishing sites, steal cookies, or perform actions on behalf of authenticated users. This vulnerability particularly affects WordPress environments where multiple users with contributor roles or above exist, creating a significant risk for organizations that do not maintain strict access controls. The attack surface is broadened by the plugin's widespread use within WordPress ecosystems, where Jitsi integration is commonly implemented for video conferencing capabilities. The stored XSS nature means that even users with lower privileges who merely view affected pages could be compromised, as the malicious code executes in their browser context.
Mitigation strategies for CVE-2024-3978 should prioritize immediate plugin updates to versions that address the vulnerability, as vendors typically release patches to resolve such security issues. Organizations should implement comprehensive input validation and output escaping mechanisms for all user-provided content, particularly within shortcode processing functions. The principle of least privilege should be enforced to minimize the impact of potential compromises, ensuring that only users requiring specific administrative capabilities have contributor or higher roles. Additionally, security monitoring should include detection of suspicious shortcode usage patterns and regular security audits of WordPress plugins to identify potential vulnerabilities. Implementing content security policies can provide additional defense-in-depth measures, preventing execution of unauthorized scripts even if exploitation occurs. The vulnerability demonstrates the critical importance of proper sanitization practices in web applications and aligns with ATT&CK technique T1566 for social engineering and T1059 for command and scripting interpreters, highlighting the need for comprehensive security controls throughout the application lifecycle.