CVE-2026-53947
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Ghost
PublishedJun 24, 2026
First seenJun 24, 2026
Weakness typeCWE-204CWE-204
How to fix
Update
- ghost6.21.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ghostnpm | 5.18.0 ≤ v < 6.21.2 | 6.21.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.