CVE-2024-56038
📋 TL;DR
This reflected cross-site scripting (XSS) vulnerability in the SendSMS WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability affects all SendSMS plugin versions up to 1.2.9. WordPress administrators and users accessing pages with the vulnerable plugin are at risk.
💻 Affected Systems
- SendSMS 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 admin accounts, deface websites, or redirect users to malicious sites.
Likely Case
Attackers typically use this to steal user session cookies, perform actions on behalf of authenticated users, or display phishing content.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution.
🎯 Exploit Status
Exploitation requires tricking users into clicking malicious links. No authentication bypass is needed for the XSS itself.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.2.9
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find SendSMS plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install latest version from WordPress repository.
🔧 Temporary Workarounds
Input Validation Filter
allAdd custom input validation to sanitize all user inputs before processing
Add input sanitization functions in plugin code: esc_html(), esc_attr(), wp_kses()
🧯 If You Can't Patch
- Disable or remove the SendSMS plugin from WordPress installation
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for SendSMS version ≤1.2.9Check Version:
wp plugin list --name=sendsms --field=versionVerify Fix Applied:
Verify SendSMS plugin version is >1.2.9 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests with script tags or JavaScript payloads in query parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing <script>, javascript:, or encoded XSS payloads in URL parameters
SIEM Query:
source="web_server_logs" AND (url="*<script>*" OR url="*javascript:*" OR url="*%3Cscript%3E*")