CVE-2024-37098
📋 TL;DR
This Server-Side Request Forgery (SSRF) vulnerability in the BlossomThemes Email Newsletter WordPress plugin allows attackers to make the server send unauthorized requests to internal or external systems. It affects all WordPress sites using vulnerable versions of this plugin, potentially exposing internal network resources.
💻 Affected Systems
- BlossomThemes Email Newsletter WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, scan internal networks, interact with cloud metadata services, or perform port scanning from the vulnerable server.
Likely Case
Information disclosure from internal services, limited internal network reconnaissance, or abuse of the server as a proxy for malicious requests.
If Mitigated
Limited impact if network segmentation restricts internal access and external requests are filtered.
🎯 Exploit Status
SSRF vulnerabilities typically require some level of access to trigger, but exploitation mechanics are generally straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.7
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'BlossomThemes Email Newsletter'. 4. Click 'Update Now' if available, or download version 2.2.7 from WordPress repository. 5. Replace plugin files if manual update required.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate blossomthemes-email-newsletter
Network Restriction
allConfigure web application firewall to block SSRF patterns or restrict outbound requests from web server.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WordPress server from sensitive internal systems.
- Deploy web application firewall with SSRF protection rules and request validation.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for BlossomThemes Email Newsletter version ≤2.2.6.
Check Version:
wp plugin get blossomthemes-email-newsletter --field=version
Verify Fix Applied:
Confirm plugin version is 2.2.7 or higher in WordPress admin panel.
📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from web server to internal IPs or unexpected domains
- Multiple failed connection attempts to internal services from web server
Network Indicators:
- Web server making requests to internal network segments, cloud metadata endpoints (169.254.169.254), or localhost
SIEM Query:
source="web_server_logs" dest_ip IN (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1, 169.254.169.254)
🔗 References
- https://patchstack.com/database/vulnerability/blossomthemes-email-newsletter/wordpress-blossomthemes-email-newsletter-plugin-2-2-7-server-side-request-forgery-ssrf-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/blossomthemes-email-newsletter/wordpress-blossomthemes-email-newsletter-plugin-2-2-7-server-side-request-forgery-ssrf-vulnerability?_s_id=cve