CVE-2026-53944

—

CVSS 3.1

5.8 medium

EPSS

<1%p26

Published

Jun 24, 2026 (Jun 24, 2026)

Modified

Jun 25, 2026

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.

Weakness: CWE-184, CWE-918
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news0 stories

No ingested article mentions this CVE yet.