CVE-2025-8413

6.4 MEDIUM

📋 TL;DR

The Listeo WordPress theme versions up to 2.0.8 contain a stored XSS vulnerability in the soundcloud shortcode. Authenticated attackers with contributor-level access or higher can inject malicious scripts that execute when users view compromised pages. This affects all WordPress sites using vulnerable Listeo theme versions.

💻 Affected Systems

Products:
  • Listeo WordPress Theme
Versions: ≤ 2.0.8
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with Listeo theme and contributor-level authenticated access.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal admin credentials, redirect users to malicious sites, deface websites, or install backdoors leading to complete site compromise.

🟠

Likely Case

Attackers with contributor access inject malicious scripts to steal user session cookies or redirect visitors to phishing pages.

🟢

If Mitigated

With proper user role management and input validation, impact is limited to potential defacement of specific pages.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires authenticated access at contributor level or higher. Exploitation involves injecting scripts via soundcloud shortcode attributes.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: > 2.0.8

Vendor Advisory: https://themeforest.net/item/listeo-directory-listings-wordpress-theme/23239259

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Check Listeo theme version. 4. If ≤2.0.8, update to latest version via theme update mechanism or download from ThemeForest.

🔧 Temporary Workarounds

Remove Contributor Shortcode Access

WordPress

Restrict contributor users from using shortcodes by modifying user capabilities or using security plugins.

Input Sanitization Plugin

WordPress

Install WordPress security plugin that provides additional input sanitization for shortcodes.

🧯 If You Can't Patch

  • Implement strict user role management - limit contributor accounts to trusted users only
  • Install web application firewall (WAF) with XSS protection rules

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Appearance > Themes > Listeo theme details for version number.

Check Version:

WordPress admin panel: Appearance > Themes > Listeo theme details

Verify Fix Applied:

After updating, verify theme version shows >2.0.8 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual shortcode modifications in post/page edits
  • Multiple failed login attempts followed by contributor account access

Network Indicators:

  • Suspicious script tags in HTTP responses containing soundcloud shortcode parameters

SIEM Query:

Search for POST requests containing 'soundcloud' shortcode with script tags or javascript: payloads in parameters

🔗 References

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