CVE-2026-70591

Received Received - Intake

Server-Side Request Forgery in Ghost CMS Admin

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: GitHub, Inc.

Description

Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a Server-Side Request Forgery in Ghost Admin image fetching allowed any staff-level user to perform a blind HTTP GET request against internal hosts. No output was returned, but this could have been used to probe open ports on internal hosts. This issue is fixed in version 6.54.1.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-04

Last Modified

2026-08-04

Generated

2026-08-05

AI Q&A

2026-08-05

EPSS Evaluated

N/A

NVD

CVE-2026-70591

Affected Vendors & Products

Vendor	Product	Version / Range
ghost	ghost	From 0.10.0 (inc) to 6.54.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This vulnerability is a Server-Side Request Forgery (SSRF) in Ghost, a Node.js content management system. It affects versions from 0.10.0 to 6.54.1. A staff-level user could exploit this to make blind HTTP GET requests to internal hosts without receiving output. The goal is to probe open ports on internal networks.

Detection Guidance

This vulnerability involves Ghost Admin image fetching allowing SSRF. To detect it, check Ghost logs for unusual outbound HTTP requests from admin users. Review network traffic for internal host probes. No direct commands are provided in the context.

Impact Analysis

If you use Ghost with staff accounts, an attacker with access could scan internal systems for open ports. This could reveal sensitive services or infrastructure details, potentially aiding further attacks. However, no data is exfiltrated directly.

Compliance Impact

This SSRF could violate compliance by exposing internal network details, which may breach data protection requirements like GDPR or HIPAA if sensitive systems are discovered. It undermines network segmentation and access controls.

Mitigation Strategies

Upgrade Ghost to version 6.54.1 or later immediately. Restrict staff-level user access to only necessary functions. Monitor network traffic for internal host probes.

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