CVE-2026-53947
Medium · 5.3CVSS
5.3
EPSS
0.3%
Published
Jun 24, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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