CVE-2025-53239

6.1 MEDIUM

📋 TL;DR

This is a reflected cross-site scripting (XSS) vulnerability in the WordPress User Registration Aide plugin. Attackers can inject malicious scripts via crafted URLs that execute in victims' browsers when they visit compromised pages. WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • User Registration Aide WordPress plugin
Versions: All versions up to and including 1.5.3.8
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with the vulnerable plugin enabled.

⚠️ 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 administrator session cookies, take over WordPress admin accounts, deface websites, or redirect users to malicious sites.

🟠

Likely Case

Attackers steal user session cookies or credentials through phishing links, potentially compromising individual user accounts.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts would be neutralized before execution.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 1.5.3.8

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/user-registration-aide/vulnerability/wordpress-user-registration-aide-plugin-1-5-3-8-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'User Registration Aide'. 4. Click 'Update Now' if available. 5. If no update appears, manually download latest version from WordPress repository and replace plugin files.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily disable the User Registration Aide plugin until patched

wp plugin deactivate user-registration-aide

Implement WAF rules

all

Configure web application firewall to block XSS payloads

🧯 If You Can't Patch

  • Implement Content Security Policy (CSP) headers to restrict script execution
  • Use browser security extensions or plugins that block XSS attacks

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins → User Registration Aide version

Check Version:

wp plugin get user-registration-aide --field=version

Verify Fix Applied:

Verify plugin version is greater than 1.5.3.8 and test XSS payloads no longer execute

📡 Detection & Monitoring

Log Indicators:

  • Unusual GET/POST requests containing script tags or JavaScript code in URL parameters
  • Multiple failed XSS attempts in web server logs

Network Indicators:

  • HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads

SIEM Query:

source="web_server_logs" AND ("<script>" OR "javascript:" OR "%3Cscript%3E") AND uri="*user-registration-aide*"

🔗 References

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