CVE-2025-25117
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Smart Countdown FX WordPress plugin allows attackers to inject malicious scripts that execute when other users view affected pages. The vulnerability affects all WordPress sites using Smart Countdown FX versions up to 1.5.5. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- Smart Countdown FX 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 steal administrator session cookies, gain full control of WordPress site, install backdoors, deface website, or steal sensitive user data.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect visitors to phishing sites, or display malicious content.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users.
🎯 Exploit Status
XSS vulnerabilities are commonly exploited and weaponized. The Patchstack reference provides technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.6 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Smart Countdown FX. 4. Click 'Update Now' if update available. 5. If no update, deactivate and delete plugin, then install fresh version from WordPress repository.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched version is available.
wp plugin deactivate smart-countdown-fx
Content Security Policy
allImplement CSP headers to restrict script execution sources.
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads.
- Disable user input fields that accept HTML/JavaScript in plugin settings.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Smart Countdown FX version. If version is 1.5.5 or earlier, you are vulnerable.Check Version:
wp plugin get smart-countdown-fx --field=versionVerify Fix Applied:
After update, verify plugin version shows 1.5.6 or later in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin admin endpoints
- Suspicious JavaScript payloads in request parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing script tags or JavaScript in plugin-related parameters
- Unexpected outbound connections after visiting pages with countdowns
SIEM Query:
source="web_logs" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "smart-countdown") AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:")