YiFang CMS D_singlePageGroup.php atualização cross site scripting

Successful exploitation of CVE-2026-3743 allows an attacker to inject arbitrary JavaScript code into the YiFang CMS application. This can lead to a variety of malicious outcomes, including session hijacking, defacement of the website, redirection to phishing sites, and theft of sensitive user data. Given the public availability of an exploit, the risk of immediate exploitation is significant. The impact can range from minor annoyance to complete compromise of the web server and its associated data, depending on the attacker's goals and the CMS configuration.

Websites and applications utilizing YiFang CMS 2.0.5–2.0.5 are at risk. This includes organizations hosting their own YiFang CMS instances, as well as shared hosting environments where multiple users may be running the CMS. Administrators and users with access to the CMS admin panel are particularly vulnerable.

• php: Examine the app/db/admin/D_singlePageGroup.php file for unsanitized input handling of the Name parameter. Search for code that directly outputs this parameter without proper encoding.

// Example of vulnerable code
<?php
echo $_POST['Name']; // Vulnerable to XSS
?>

• generic web: Monitor access logs for requests containing suspicious JavaScript payloads in the Name parameter of URLs targeting the D_singlePageGroup.php file. • generic web: Check response headers for signs of XSS activity, such as the presence of injected JavaScript code.

1. 2026-03-08Disclosure

   disclosure

1. Reservado2026-03-07
2. Publicada2026-03-08
3. Modificada2026-03-11
4. EPSS atualizado2026-03-23

The primary mitigation for CVE-2026-3743 is to upgrade YiFang CMS to a patched version. As no fixed version is currently available, consider implementing temporary workarounds to reduce the attack surface. Input validation and sanitization on the Name parameter in app/db/admin/D_singlePageGroup.php can help prevent malicious code injection. Web application firewalls (WAFs) configured to detect and block XSS payloads targeting this specific file can also provide a layer of protection. After attempting any mitigation, verify the fix by attempting to inject a simple XSS payload (e.g., <script>alert(1)</script>) through the affected parameter and confirming that it is not executed.