CVE-2026-53944

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 72/100
Published: 2026-06-24 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Changed
C: None
I: Low
A: None

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 Classification (2)

Bug Bounty Relevance

72 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

EPSS — Exploitation Probability

0.33%
Raw Score 0.003290
Percentile 26.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00329
2026-10-28
0.00329

Intelligence Sources

nvd ref →