CVE-2025-39428
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Gravity Forms CSS Themes with Fontawesome and Placeholders 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. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Gravity Forms CSS Themes with Fontawesome and Placeholders
⚠️ 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 steal administrator credentials, take over the WordPress site, deface content, or install backdoors for persistent access.
Likely Case
Attackers steal user session cookies or credentials, redirect users to malicious sites, or perform actions on behalf of authenticated users.
If Mitigated
Limited impact with proper input validation and output encoding in place, though stored XSS remains a serious threat.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited; exploitation typically requires some level of access to input fields.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 8.5
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Gravity Forms CSS Themes with Fontawesome and Placeholders'. 4. Click 'Update Now' if available, or manually update to latest version. 5. Verify plugin version is above 8.5.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate gravity-forms-css-themes-with-fontawesome-and-placeholders
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting this plugin.
🧯 If You Can't Patch
- Restrict plugin access to trusted users only and monitor for suspicious input.
- Implement Content Security Policy (CSP) headers to mitigate script execution.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Gravity Forms CSS Themes with Fontawesome and Placeholders' version 8.5 or lower.Check Version:
wp plugin get gravity-forms-css-themes-with-fontawesome-and-placeholders --field=versionVerify Fix Applied:
Confirm plugin version is above 8.5 in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints containing script tags or JavaScript payloads
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters like <script> tags to plugin-related URLs
SIEM Query:
source="web_server" AND (uri="*gravity-forms-css*" AND (param="*<script>*" OR param="*javascript:*"))