CVE-2024-51689 in CF7 WOW Styler Plugin
Summary
by MITRE • 11/09/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Tobias Conrad CF7 WOW Styler allows Reflected XSS.This issue affects CF7 WOW Styler: from n/a through 1.6.8.
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Analysis
by VulDB Data Team • 02/28/2025
This vulnerability represents a classic reflected cross-site scripting flaw that exploits improper input validation during web page generation processes. The issue specifically impacts the Tobias Conrad CF7 WOW Styler plugin, which is designed to enhance contact form 7 functionality within wordpress environments. The vulnerability arises from inadequate sanitization of user-supplied input parameters that are subsequently reflected back to users through web responses without proper neutralization. This creates an exploitable condition where malicious actors can inject arbitrary javascript code that executes in the context of other users' browsers. The affected version range spans from an unknown initial version through 1.6.8, indicating a prolonged period during which this security weakness remained unaddressed.
The technical implementation of this reflected XSS vulnerability occurs when the plugin processes user input through query parameters or form fields that are not properly escaped or validated before being rendered in web page content. When a victim visits a maliciously crafted URL containing script payloads, the plugin fails to neutralize the input during the page generation phase, allowing the injected code to execute in the victim's browser context. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws and aligns with ATT&CK technique T1531 for "Modify System Image" through the execution of malicious code in user browsers. The reflected nature of the vulnerability means that the malicious payload must be crafted specifically for each user interaction rather than being permanently stored on the server.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking. Attackers can leverage this weakness to perform a wide range of malicious activities including but not limited to credential harvesting, session manipulation, redirection to malicious sites, and data exfiltration from authenticated users. In wordpress environments where CF7 WOW Styler is commonly deployed, successful exploitation could compromise the entire website administration interface, especially if administrators visit malicious URLs or interact with compromised forms. The vulnerability is particularly concerning as it affects the plugin's core functionality of generating web pages, making it a critical entry point for attackers seeking to establish persistent access or conduct more sophisticated attacks.
Mitigation strategies for this reflected XSS vulnerability should begin with immediate patching of the CF7 WOW Styler plugin to versions beyond 1.6.8 where the vulnerability has been addressed. Organizations should implement comprehensive input validation and output encoding mechanisms at all points where user data is processed and rendered in web responses. This includes implementing proper html entity encoding for all dynamic content and utilizing content security policies to prevent unauthorized script execution. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though these should not replace proper code-level fixes. Security monitoring should include detection of suspicious query parameters and unusual user behavior patterns that might indicate exploitation attempts. Regular security assessments of wordpress plugins and themes are essential to identify similar vulnerabilities that could provide attackers with alternative attack vectors for compromising web applications and their underlying user data.