CVE-2026-53947
Ghost: Member existence leak via magic link sign-in response
Description
Ghost is a Node.js content management system. From 5.18.0 until 6.21.1, a discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. This vulnerability is fixed in 6.21.1.
INFO
Published Date :
June 24, 2026, 6:07 p.m.
Last Modified :
June 24, 2026, 6:07 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-53947
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 or later.
- Verify member sign-in endpoint responses.
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CVE-2026-53947 vulnerability anywhere in the article.