CVE-2025-31021
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users through the Mobile Smart WordPress plugin. When exploited, it enables cross-site scripting attacks that can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using Mobile Smart plugin versions up to v1.3.16 are affected.
💻 Affected Systems
- Mobile Smart 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 session cookies, take over WordPress sites, install backdoors, deface websites, or redirect users to malicious sites.
Likely Case
Attackers will typically use this to steal user session cookies, perform phishing attacks, or redirect users to malicious content for credential theft.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, and impact would be limited to failed exploitation attempts.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. The vulnerability is publicly documented with technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.3.17 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Mobile Smart plugin. 4. Click 'Update Now' if update is available. 5. If no update appears, manually download v1.3.17+ from WordPress repository. 6. Deactivate old plugin. 7. Upload and activate new version.
🔧 Temporary Workarounds
Disable Mobile Smart Plugin
allTemporarily disable the vulnerable plugin until patched version is available.
wp plugin deactivate mobile-smart
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads targeting Mobile Smart endpoints.
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Deploy web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Mobile Smart version. If version is 1.3.16 or earlier, you are vulnerable.Check Version:
wp plugin list --name=mobile-smart --field=versionVerify Fix Applied:
Verify Mobile Smart plugin version is 1.3.17 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests with script tags or JavaScript payloads to Mobile Smart endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing <script> tags or JavaScript payloads to Mobile Smart plugin URLs
- Unusual redirects from Mobile Smart pages
SIEM Query:
source="web_server_logs" AND (uri="*mobile-smart*" AND (message="*<script>*" OR message="*javascript:*" OR message="*onload=*"))