CVE-2025-58011
📋 TL;DR
This Server-Side Request Forgery (SSRF) vulnerability in the Alex Content Mask WordPress plugin allows attackers to make unauthorized requests from the server to internal or external systems. It affects all versions up to 1.8.5.2 of the Content Mask plugin. WordPress sites using this vulnerable plugin are at risk.
💻 Affected Systems
- WordPress Content Mask 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 access internal services, exfiltrate sensitive data, or perform attacks against backend systems that are normally inaccessible from the internet.
Likely Case
Attackers scanning internal networks, accessing metadata services, or performing limited data exfiltration from accessible internal endpoints.
If Mitigated
Limited impact with proper network segmentation and egress filtering in place.
🎯 Exploit Status
Exploitation requires understanding of SSRF techniques and potentially authentication depending on plugin configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.8.5.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Content Mask' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin.
🔧 Temporary Workarounds
Disable Content Mask Plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate content-mask
Network Egress Filtering
allRestrict outbound HTTP/HTTPS requests from web servers to only necessary destinations
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block SSRF patterns
- Apply network segmentation to isolate web servers from sensitive internal systems
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Content Mask version ≤1.8.5.2Check Version:
wp plugin get content-mask --field=versionVerify Fix Applied:
Verify Content Mask plugin version is >1.8.5.2 or plugin is removed📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from web server to internal IPs
- Requests to metadata services (169.254.169.254)
- Multiple failed outbound connection attempts
Network Indicators:
- Web server making unexpected outbound HTTP requests
- Requests to internal-only services from web server
SIEM Query:
source="web_server_logs" AND (dest_ip=169.254.169.254 OR dest_ip IN [RFC1918_ranges]) AND user_agent="WordPress"