CVE-2023-49850
📋 TL;DR
This vulnerability allows attackers to bypass authorization controls in the WP Simple HTML Sitemap WordPress plugin, potentially accessing restricted functionality. It affects all WordPress sites running the plugin from any version up to 2.7.
💻 Affected Systems
- WP Simple HTML Sitemap 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 modify sitemap settings, inject malicious content, or potentially escalate privileges depending on what functionality lacks proper authorization checks.
Likely Case
Unauthorized users could modify sitemap configurations, potentially disrupting site functionality or injecting SEO spam.
If Mitigated
With proper network segmentation and web application firewalls, impact would be limited to the specific plugin functionality.
🎯 Exploit Status
Exploitation requires some level of access but authorization bypass vulnerabilities are commonly weaponized in WordPress environments.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.8 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'WP Simple HTML Sitemap'. 4. Click 'Update Now' if available, or delete and reinstall latest version. 5. Verify plugin version is 2.8 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate wp-simple-html-sitemap
Restrict Admin Access
linuxImplement IP whitelisting for WordPress admin area
Add to .htaccess: Order Deny,Allow\nDeny from all\nAllow from 192.168.1.0/24
🧯 If You Can't Patch
- Implement web application firewall rules to block unauthorized access to plugin endpoints
- Enable detailed logging for all plugin-related activities and monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → WP Simple HTML Sitemap → Version. If version is 2.7 or lower, you are vulnerable.Check Version:
wp plugin get wp-simple-html-sitemap --field=versionVerify Fix Applied:
Verify plugin version is 2.8 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-admin/admin-ajax.php with 'action' parameter containing 'wp_simple_html_sitemap'
- Multiple failed authorization attempts followed by successful plugin actions
Network Indicators:
- Unusual traffic patterns to plugin-specific endpoints from unauthorized IP addresses
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" AND parameters CONTAINS "wp_simple_html_sitemap") AND user_role!="administrator"