CVE-2025-3615
📋 TL;DR
The Fluent Forms WordPress plugin has a stored cross-site scripting (XSS) vulnerability that allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into web pages. These scripts execute whenever users visit the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using Fluent Forms versions up to 6.0.2 are affected.
💻 Affected Systems
- Fluent Forms 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, install backdoors, deface pages, or redirect users to malicious sites.
Likely Case
Attackers with contributor access inject malicious scripts to steal user session cookies, perform actions as other users, or display phishing content.
If Mitigated
With proper user access controls and content security policies, impact is limited to isolated script execution without significant data compromise.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once attacker has contributor credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.0.3 or later
Vendor Advisory: https://wordpress.org/plugins/fluentform/#developers
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Fluent Forms and click 'Update Now'. 4. Verify version is 6.0.3 or higher.
🔧 Temporary Workarounds
Temporarily Disable Plugin
allDeactivate Fluent Forms plugin until patched
wp plugin deactivate fluentform
Restrict User Roles
linuxTemporarily remove contributor-level access for untrusted users
wp user list --role=contributor --field=ID | xargs wp user set-role subscriber
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Enable WordPress security plugins with XSS protection features
🔍 How to Verify
Check if Vulnerable:
Check Fluent Forms plugin version in WordPress admin panel under Plugins > Installed PluginsCheck Version:
wp plugin get fluentform --field=versionVerify Fix Applied:
Verify plugin version is 6.0.3 or higher and test form submission functionality📡 Detection & Monitoring
Log Indicators:
- Unusual form submissions with script tags
- Multiple failed login attempts followed by form submissions
- User role changes to contributor
Network Indicators:
- HTTP requests containing script payloads in form data
- Unusual outbound connections after form submissions
SIEM Query:
source="wordpress.log" AND ("fluentform" OR "form-submission") AND ("script" OR "javascript:" OR "onclick=" OR "onload=")🔗 References
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.0.2/assets/js/form-submission.js
- https://plugins.trac.wordpress.org/changeset/3274693/
- https://wordpress.org/plugins/fluentform/#developers
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f31bd18e-57d4-4c87-8a7c-a168e7e70061?source=cve
