CVE-2026-53944EPSS p9.6%

CVE-2026-53944CVE-2026-53944

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.

Scoring

CVSS 5.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS0.20% probability of exploitation · percentile 9.6% · 2026-08-11T12:00:17Z
Last modified2026-06-25
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.