CVE-2026-53947 Details
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.
A vulnerability in Ghost, a Node.js content management system, allows unauthenticated attackers to determine if an email address is associated with a registered member on a Ghost site. This issue arises from inconsistent responses in the members sign-in endpoints. The vulnerability affects Ghost versions 5.18.0 prior to 6.21.1.
Users can update to Ghost version 6.21.1, which addresses this vulnerability. For self-hosted instances using Docker, instructions for updating are available in the Ghost documentation. For Ghost-CLI installations, guidance on updating to the latest version is also provided in the official documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 24, 2026CISA-ADP
Assessed Jun 25, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-204 | Observable Response Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Ghost | >= 5.18.0, < 6.21.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | CVE Modified | CISA-ADP |
| Jun 24, 2026 | New CVE Received | [email protected] |