CVE-2024-8718 in Gravity Forms Toolbar Plugin
Summary
by MITRE • 10/01/2024
The Gravity Forms Toolbar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in all versions up to, and including, 1.7.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 03/09/2025
The Gravity Forms Toolbar plugin for WordPress presents a critical security vulnerability classified as CVE-2024-8718, affecting all versions up to and including 1.7.0. This vulnerability manifests as a reflected cross-site scripting flaw that exploits the 'tab' parameter within the plugin's functionality, creating a significant risk for WordPress installations that utilize this toolbar component. The issue stems from inadequate input sanitization mechanisms and insufficient output escaping practices within the plugin's codebase, allowing malicious actors to inject arbitrary web scripts that execute in the context of victim users' browsers.
The technical flaw in CVE-2024-8718 operates through a classic reflected XSS attack vector where the 'tab' parameter serves as the primary injection point. When the plugin processes this parameter without proper validation or sanitization, it fails to escape special characters that could be interpreted as executable script code. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically categorized as reflected XSS due to the malicious payload being reflected back to the user through the application's response. The attack requires minimal privileges as it targets unauthenticated users, making it particularly dangerous in environments where administrators or trusted users may inadvertently click on malicious links.
The operational impact of this vulnerability extends beyond simple script injection, creating potential pathways for more sophisticated attacks within the WordPress ecosystem. An attacker could craft malicious URLs containing XSS payloads that, when clicked by an authenticated user, could execute scripts in the user's browser context. This could lead to session hijacking, credential theft, or the execution of malicious code that modifies or exfiltrates data from the targeted WordPress installation. The reflected nature of the vulnerability means that the malicious payload is not stored on the server but is instead reflected back in the HTTP response, making it particularly challenging to detect and prevent through traditional security measures.
Organizations utilizing the Gravity Forms Toolbar plugin must implement immediate mitigations to address CVE-2024-8718. The primary recommendation involves upgrading to the latest available version of the plugin where the vulnerability has been patched, as this represents the most effective solution to eliminate the reflected XSS risk. Additionally, administrators should implement input validation and output escaping mechanisms within their WordPress installations, particularly around parameters that are processed through the toolbar functionality. Network-level protections such as web application firewalls and security headers can provide additional defense-in-depth measures, though these should not replace the core remediation of updating the vulnerable plugin. The vulnerability also highlights the importance of maintaining current security practices in WordPress plugin management and the necessity of regularly auditing third-party components for known vulnerabilities.
This vulnerability aligns with ATT&CK technique T1566.001 which involves the use of phishing campaigns to deliver malicious payloads through social engineering. The reflected XSS nature of CVE-2024-8718 makes it particularly suitable for such attacks, as attackers can craft URLs that appear legitimate but contain malicious scripts designed to exploit the vulnerability when users navigate to them. The impact extends to the broader WordPress security ecosystem, demonstrating how vulnerabilities in popular plugins can create widespread exposure across numerous installations. Security teams should consider implementing comprehensive monitoring for suspicious traffic patterns and user behavior that might indicate exploitation attempts, while also maintaining updated threat intelligence feeds to identify similar vulnerabilities in other WordPress plugins that may present comparable risks.