CVE-2025-13906
📋 TL;DR
The WP Flot WordPress plugin has a stored cross-site scripting vulnerability that allows authenticated attackers with contributor-level access or higher to inject malicious scripts into website pages. These scripts execute whenever users view the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using WP Flot version 0.2.2 or earlier are affected.
💻 Affected Systems
- WP Flot 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, deface websites, redirect users to malicious sites, or perform actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Attackers with contributor access inject malicious scripts that steal user session cookies or credentials, leading to account takeover and further privilege escalation.
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 straightforward once attacker has contributor privileges. The vulnerability is in the 'linechart' shortcode attribute handling.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.2.3 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/wp-flot/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP Flot plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin immediately.
🔧 Temporary Workarounds
Disable WP Flot Plugin
allTemporarily disable the vulnerable plugin until patched version is available
wp plugin deactivate wp-flot
Restrict User Roles
allLimit contributor-level access to trusted users only
🧯 If You Can't Patch
- Remove contributor-level access from untrusted users
- Implement Content Security Policy headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for WP Flot version 0.2.2 or earlierCheck Version:
wp plugin get wp-flot --field=versionVerify Fix Applied:
Verify WP Flot plugin version is 0.2.3 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin with linechart shortcode parameters
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Suspicious JavaScript payloads in HTTP POST data
- Unexpected outbound connections from WordPress site
SIEM Query:
source="wordpress" AND ("linechart" OR "wp-flot") AND (POST OR PUT) AND ("<script>" OR "javascript:")