CVE-2026-53944
MEDIUM
NVD
CVSS Score
5.8
Severity
MEDIUM
Published
Jun 24, 2026
Vendor
unknown
Description
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.