CVE-2025-3704
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in DBAR Productions Volunteer Sign Up Sheets WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using versions before 5.5.5 of this plugin are affected.
💻 Affected Systems
- DBAR Productions Volunteer Sign Up Sheets WordPress Plugin
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over the WordPress site, deface content, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript that steals user session cookies or credentials when users visit affected pages, leading to account takeover of regular users or administrators.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing any exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities typically require some level of access to input fields, but once injected, the payload affects all users viewing the page. The CVE description suggests stored XSS, which persists across sessions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.5.5
Vendor Advisory: https://github.com/dbarproductions/pta-volunteer-sign-up-sheets
Restart Required: No
Instructions:
1. Download version 5.5.5 from GitHub: https://github.com/dbarproductions/pta-volunteer-sign-up-sheets/archive/refs/tags/5.5.5.zip
2. Deactivate the current plugin in WordPress admin
3. Upload and replace with version 5.5.5 via WordPress plugin upload or manual file replacement
4. Reactivate the plugin
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Volunteer Sign Up Sheets plugin until patched
wp plugin deactivate pta-volunteer-sign-up-sheets
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting the plugin
🧯 If You Can't Patch
- Disable the Volunteer Sign Up Sheets plugin immediately
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Volunteer Sign Up Sheets version. If version is below 5.5.5, you are vulnerable.Check Version:
wp plugin get pta-volunteer-sign-up-sheets --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 5.5.5 in WordPress admin and test form inputs with basic XSS payloads like <script>alert('test')</script> to ensure they are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints containing script tags or JavaScript code
- Multiple failed attempts to submit malicious payloads
Network Indicators:
- HTTP requests containing common XSS payload patterns to plugin-specific URLs
SIEM Query:
source="web_server" AND (uri="*pta-volunteer*" OR uri="*volunteer-sign-up*") AND (content="<script>" OR content="javascript:" OR content="onerror=" OR content="onload=")