CVE-2026-53944
Ghost: Private IP filtering bypass to make server-side requests to internal services
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.
INFO
Published Date :
June 24, 2026, 6:10 p.m.
Last Modified :
June 24, 2026, 6:10 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-53944
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Ghost CMS to version 6.21.1.
- Ensure IP filtering is correctly configured.
- Review external request handling.
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The following list is the news that have been mention
CVE-2026-53944 vulnerability anywhere in the article.