CVE-2026-53947
Ghost: Member existence leak via magic link sign-in response
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-204 |
| Vendor | tryghost |
| Product | ghost |
| Published | Jun 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
TryGhost / Ghost
>= 5.18.0, < 6.21.1