CVE-2025-9862
📋 TL;DR
A Server-Side Request Forgery (SSRF) vulnerability in Ghost allows attackers to make the server send requests to internal resources that should not be accessible. This affects Ghost installations from versions 6.0.0 through 6.0.8 and 5.99.0 through 5.130.3. Attackers could potentially access internal services, APIs, or cloud metadata endpoints.
💻 Affected Systems
- Ghost CMS
📦 What is this software?
Ghost by Ghost
Ghost by Ghost
⚠️ Risk & Real-World Impact
Worst Case
Attacker accesses sensitive internal systems, cloud metadata services (exposing credentials), or performs lateral movement to critical infrastructure.
Likely Case
Attacker scans internal network, accesses internal APIs, or retrieves limited metadata from cloud services.
If Mitigated
Limited to accessing only non-sensitive internal endpoints due to network segmentation and proper access controls.
🎯 Exploit Status
Exploitation requires some understanding of SSRF techniques and target environment.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v6.0.9 or later
Vendor Advisory: https://github.com/TryGhost/Ghost/security/advisories/GHSA-f7qg-xj45-w956
Restart Required: No
Instructions:
1. Backup your Ghost installation and database. 2. Update Ghost to version 6.0.9 or later using npm: 'npm update ghost'. 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Network Segmentation
allRestrict Ghost server's outbound network access to only necessary external services.
Input Validation
allImplement strict URL validation for any user-supplied URLs in custom integrations.
🧯 If You Can't Patch
- Implement network controls to block Ghost server from accessing internal IP ranges and cloud metadata endpoints.
- Deploy a web application firewall (WAF) with SSRF protection rules.
🔍 How to Verify
Check if Vulnerable:
Check Ghost version in admin panel or run 'ghost version' command.Check Version:
ghost versionVerify Fix Applied:
Confirm version is 6.0.9 or later and test SSRF attempts are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Ghost server to internal IPs
- Requests to cloud metadata endpoints (169.254.169.254, etc.)
Network Indicators:
- Ghost server making unexpected HTTP requests to internal network segments
SIEM Query:
source="ghost-logs" AND (dst_ip=10.0.0.0/8 OR dst_ip=172.16.0.0/12 OR dst_ip=192.168.0.0/16 OR dst_ip=169.254.169.254)