CVE-2026-53944 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

TryGhost

Ghost

affected

Version	Status	Constraints
`>= 6.0.9, < 6.21.1`	affected	—

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/TryGhost/Ghost/security/advisories/GHSA-wvp2-4qqp-4h3r

History

Wed, 24 Jun 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 24 Jun 2026 18:45:00 +0000

Type	Values Removed	Values Added
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.
Title		Ghost: Private IP filtering bypass to make server-side requests to internal services
Weaknesses		CWE-184 CWE-918
References		https://github.com/TryGhost/Ghost/security/advisories/GHSA-wvp2-4qqp-4h3r
Metrics		cvssV3_1 `{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-24T18:10:30.985Z

Updated: 2026-06-24T18:50:17.772Z

Reserved: 2026-06-11T15:50:01.280Z

Link: CVE-2026-53944

Vulnrichment

Updated: 2026-06-24T18:50:14.901Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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