Vulnerability DatabaseCVE-2026-53944
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CVE-2026-53944
Published:June 24, 2026
Updated:June 29, 2026
Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, when making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. This vulnerability is fixed in 6.21.1.
Affected Packages
ghost (NPM):
Affected version(s) >=6.0.9 <6.21.1
Fix Suggestion:
Update to version 6.21.1
Related Resources (1)
https://github.com/TryGhost/Ghost/security/advisories/GHSA-wvp2-4qqp-4h3r
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
CWE-918
Incomplete List of Disallowed Inputs
CWE-184
EPSS
Base Score:
0.20