CVE-2025-25071

7.1 HIGH

📋 TL;DR

A Cross-Site Request Forgery (CSRF) vulnerability in the WordPress Vignette Ads plugin allows attackers to perform stored cross-site scripting (XSS) attacks. This affects WordPress sites using the Vignette Ads plugin version 0.2 and earlier. Attackers can trick authenticated administrators into executing malicious actions that inject persistent scripts.

💻 Affected Systems

Products:
  • WordPress Vignette Ads plugin
Versions: 0.2 and earlier
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with the vulnerable plugin enabled and an authenticated administrator to be tricked into performing an action.

⚠️ 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 inject malicious JavaScript that steals administrator credentials, redirects users to malicious sites, or takes full control of the WordPress site when administrators view affected pages.

🟠

Likely Case

Attackers create fake admin interfaces or forms that trick logged-in administrators into executing actions that inject malicious scripts into the site, potentially compromising user sessions and site integrity.

🟢

If Mitigated

With proper CSRF protections and input validation, the vulnerability would be prevented, and only legitimate admin actions would be processed.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

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

Exploitation requires social engineering to trick an authenticated administrator into clicking a malicious link or visiting a crafted page.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check plugin repository for updated version

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/vignete-ads/vulnerability/wordpress-vignette-ads-plugin-0-2-csrf-to-stored-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Vignette Ads plugin. 4. Click 'Update Now' if update available. 5. If no update, deactivate and remove plugin immediately.

🔧 Temporary Workarounds

Implement CSRF Tokens

WordPress

Add CSRF protection tokens to all plugin forms and actions

Requires custom PHP development to implement nonce verification in plugin code

🧯 If You Can't Patch

  • Disable or remove the Vignette Ads plugin immediately
  • Implement web application firewall (WAF) rules to block CSRF attempts and XSS payloads

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for Vignette Ads version 0.2 or earlier

Check Version:

wp plugin list --name=vignette-ads --field=version

Verify Fix Applied:

Verify plugin is updated to version above 0.2 or completely removed from the system

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to admin-ajax.php or plugin-specific endpoints
  • Multiple failed CSRF token validations in WordPress debug logs

Network Indicators:

  • Unexpected JavaScript injection in plugin settings or content
  • Suspicious referrer headers in admin area requests

SIEM Query:

source="wordpress.log" AND ("admin-ajax.php" OR "vignette-ads") AND ("csrf" OR "xss" OR "script injection")

🔗 References

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